add hack-a-round for language specified markdown code blocks
When language is specified in a markdown code block such as:
````
```c
printf("Hello, world!\n");
```
````
is used, the resulting HTML as produced by `pandoc(1)` combined
with our revised `ioccc.css` is not intent the code block well.
A temporary "_hack-a-round_" is to turn the "markdown code language
specifier" into an HTML comment. For example:
````
```<!---c-->
printf("Hello, world!\n");
```
````
This commits turns off existing markdown code language specifiers
for now, while preserving our ability to restore them in the future
when a better "_hack-a-round_" to the "markdown code language
specifier" problem is found.
The HTML impact if this "_hack-a-round_" is to produce HTML that
looks like this:
```
<pre class="<!---c-->"><code> .. </code></pre>
```
We might be able to create a complex set of classes for each markdown
code language (there won't be very many) in `ioccc.css`, or we might
find a more general CSS (or maybe `pandoc(1)`?) solution.
For now, this hack-a-round will have to do.
This commit is contained in:
Landon Curt Noll committed
1 parent
3919df50fb
commit
b66c79254a
700 files changed
+7052
-7056
No files matched your search
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
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```<!---sh-->
|
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make all
|
||||
```
|
||||
|
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|
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## To use:
|
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|
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```sh
|
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```<!---sh-->
|
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./anonymous
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```
|
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|
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@@ -22,7 +22,7 @@ as the alternate code. See below for the tattoo side-by-side with the code.
|
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|
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### Alternate build:
|
||||
|
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```sh
|
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```<!---sh-->
|
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make alt
|
||||
```
|
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|
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@@ -31,7 +31,7 @@ as the alternate code. See below for the tattoo side-by-side with the code.
|
||||
|
||||
NOTE: this version might not work on some systems like macOS.
|
||||
|
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```sh
|
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```<!---sh-->
|
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./anonymous.alt
|
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```
|
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|
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|
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@@ -141,19 +141,19 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
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<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./anonymous</span></span></code></pre></div>
|
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<pre class="<!---sh-->"><code> ./anonymous</code></pre>
|
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<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>The original version of this entry was added, by request,
|
||||
in order to show the code that was turned into the
|
||||
<a href="https://web.archive.org/web/20070120220721/https://thomasscovell.com/tattoo.php">tattoo</a>,
|
||||
as the alternate code. See below for the tattoo side-by-side with the code.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<p>NOTE: this version might not work on some systems like macOS.</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./anonymous.alt</span></span></code></pre></div>
|
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<pre class="<!---sh-->"><code> ./anonymous.alt</code></pre>
|
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<h2 id="judges-remarks">Judges’ remarks:</h2>
|
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<p>The author was too embarrassed that they could write such trash, so I
|
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promised to protect their identity. I will say that the author of this
|
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|
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@@ -1,6 +1,6 @@
|
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## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
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@@ -22,7 +22,7 @@ For more detailed information see [1984 decot bugs](../../bugs.html#1984_decot).
|
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|
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## To use:
|
||||
|
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```sh
|
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```<!---sh-->
|
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./decot
|
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```
|
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|
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@@ -36,14 +36,14 @@ can use this version.
|
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|
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### Alternate build:
|
||||
|
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```sh
|
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```<!---sh-->
|
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make alt
|
||||
```
|
||||
|
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|
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### Alternate use:
|
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|
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```sh
|
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```<!---sh-->
|
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./decot.alt
|
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```
|
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|
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@@ -61,13 +61,13 @@ the judges offer this one comment: understand remarks!
|
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Some new (in 1984) compilers disliked line 15 of the original source, so we
|
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changed it from:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
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for(signal=0;*k * x * __FILE__ *i;) do {
|
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```
|
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|
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to:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
for(signal=0;*k *x * __FILE__ *i;) do {
|
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```
|
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|
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@@ -75,7 +75,7 @@ To see what we mean look at the [original source file](decot.orig.c). The
|
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[alternate code](decot.alt.c) is the version that has this modification. The
|
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fixed version has instead:
|
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|
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```c
|
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```<!---c-->
|
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for(signal=0;*k *= * __FILE__ *i;) do {
|
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```
|
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|
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|
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@@ -141,7 +141,7 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
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<pre class="<!---sh-->"><code> make all</code></pre>
|
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<p>NOTE: there is an <a href="#alternate-code">alternate version</a> which will only work if
|
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you have an old enough compiler or a compiler that supports <code>-traditional-cpp</code>.
|
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The original code was fixed in 2023 to not require this.</p>
|
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@@ -150,15 +150,15 @@ The original code was fixed in 2023 to not require this.</p>
|
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<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
|
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<p>For more detailed information see <a href="../../bugs.html#1984_decot">1984 decot bugs</a>.</p>
|
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<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./decot</span></span></code></pre></div>
|
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<pre class="<!---sh-->"><code> ./decot</code></pre>
|
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<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>This alternate code, the original, requires a compiler that supports
|
||||
<code>-traditional-cpp</code> or an old enough compiler. If you have such a compiler you
|
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can use this version.</p>
|
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<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
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<h3 id="alternate-use">Alternate use:</h3>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./decot.alt</span></span></code></pre></div>
|
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<pre class="<!---sh-->"><code> ./decot.alt</code></pre>
|
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<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>This program prints out what looks like a fragment of C code.</p>
|
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<p>Is this a <strong>bug</strong> or is this a <strong>feature</strong>? To help choose
|
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@@ -166,13 +166,13 @@ the judges offer this one comment: understand remarks!</p>
|
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<h3 id="historical-remarks">Historical remarks:</h3>
|
||||
<p>Some new (in 1984) compilers disliked line 15 of the original source, so we
|
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changed it from:</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="cf">for</span><span class="op">(</span>signal<span class="op">=</span><span class="dv">0</span><span class="op">;*</span>k <span class="op">*</span> x <span class="op">*</span> __FILE__ <span class="op">*</span>i<span class="op">;)</span> <span class="cf">do</span> <span class="op">{</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> for(signal=0;*k * x * __FILE__ *i;) do {</code></pre>
|
||||
<p>to:</p>
|
||||
<div class="sourceCode" id="cb7"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="cf">for</span><span class="op">(</span>signal<span class="op">=</span><span class="dv">0</span><span class="op">;*</span>k <span class="op">*</span>x <span class="op">*</span> __FILE__ <span class="op">*</span>i<span class="op">;)</span> <span class="cf">do</span> <span class="op">{</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> for(signal=0;*k *x * __FILE__ *i;) do {</code></pre>
|
||||
<p>To see what we mean look at the <a href="decot.orig.c">original source file</a>. The
|
||||
<a href="decot.alt.c">alternate code</a> is the version that has this modification. The
|
||||
fixed version has instead:</p>
|
||||
<div class="sourceCode" id="cb8"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> <span class="cf">for</span><span class="op">(</span>signal<span class="op">=</span><span class="dv">0</span><span class="op">;*</span>k <span class="op">*=</span> <span class="op">*</span> __FILE__ <span class="op">*</span>i<span class="op">;)</span> <span class="cf">do</span> <span class="op">{</span></span></code></pre></div>
|
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<pre class="<!---c-->"><code> for(signal=0;*k *= * __FILE__ *i;) do {</code></pre>
|
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<h2 id="authors-remarks">Author’s remarks:</h2>
|
||||
<p>No remarks were provided by the author.</p>
|
||||
<!--
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
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## To use:
|
||||
|
||||
```sh
|
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```<!---sh-->
|
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./laman <positive number>
|
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```
|
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|
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@@ -17,7 +17,7 @@
|
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The program accepts ONE POSITIVE number. Seeing is believing, so try things
|
||||
like:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
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./try.sh
|
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|
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./laman 4
|
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@@ -33,14 +33,14 @@ This code should run you in circles.
|
||||
Some new compilers (in 1984) dislike lines 6 and 10 of the source, so we changed
|
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them from:
|
||||
|
||||
```c
|
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```<!---c-->
|
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;++f)a[ b<<5|c] =d++,b+ =e;for( f=0;f<O
|
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<<5|c]^ =a[b<<5 |c]^=a[ (k-(b+1 ))<<5|c]
|
||||
```
|
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|
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to:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
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;++f)a[ b<<5|c] =d++,b+= e;for( f=0;f<O
|
||||
<<5|c]^= a[b<<5 |c]^=a[ (k-(b+1 ))<<5|c]
|
||||
```
|
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|
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+11
-11
@@ -141,26 +141,26 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./laman</span> <span class="op"><</span>positive number<span class="op">></span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./laman <positive number></code></pre>
|
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<h2 id="try">Try:</h2>
|
||||
<p>The program accepts ONE POSITIVE number. Seeing is believing, so try things
|
||||
like:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span>
|
||||
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./laman</span> 4</span>
|
||||
<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">./laman</span> 9</span>
|
||||
<span id="cb3-5"><a href="#cb3-5" aria-hidden="true" tabindex="-1"></a> <span class="ex">./laman</span> 16</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh
|
||||
|
||||
./laman 4
|
||||
./laman 9
|
||||
./laman 16</code></pre>
|
||||
<p>This code should run you in circles.</p>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Some new compilers (in 1984) dislike lines 6 and 10 of the source, so we changed
|
||||
them from:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="op">;++</span>f<span class="op">)</span>a<span class="op">[</span> b<span class="op"><<</span><span class="dv">5</span><span class="op">|</span>c<span class="op">]</span> <span class="op">=</span>d<span class="op">++,</span>b<span class="op">+</span> <span class="op">=</span>e<span class="op">;</span><span class="cf">for</span><span class="op">(</span> f<span class="op">=</span><span class="dv">0</span><span class="op">;</span>f<span class="op"><</span>O</span>
|
||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a> <span class="op"><<</span><span class="dv">5</span><span class="op">|</span>c<span class="op">]^</span> <span class="op">=</span>a<span class="op">[</span>b<span class="op"><<</span><span class="dv">5</span> <span class="op">|</span>c<span class="op">]^=</span>a<span class="op">[</span> <span class="op">(</span>k<span class="op">-(</span>b<span class="op">+</span><span class="dv">1</span> <span class="op">))<<</span><span class="dv">5</span><span class="op">|</span>c<span class="op">]</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> ;++f)a[ b<<5|c] =d++,b+ =e;for( f=0;f<O
|
||||
<<5|c]^ =a[b<<5 |c]^=a[ (k-(b+1 ))<<5|c]</code></pre>
|
||||
<p>to:</p>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="op">;++</span>f<span class="op">)</span>a<span class="op">[</span> b<span class="op"><<</span><span class="dv">5</span><span class="op">|</span>c<span class="op">]</span> <span class="op">=</span>d<span class="op">++,</span>b<span class="op">+=</span> e<span class="op">;</span><span class="cf">for</span><span class="op">(</span> f<span class="op">=</span><span class="dv">0</span><span class="op">;</span>f<span class="op"><</span>O</span>
|
||||
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a> <span class="op"><<</span><span class="dv">5</span><span class="op">|</span>c<span class="op">]^=</span> a<span class="op">[</span>b<span class="op"><<</span><span class="dv">5</span> <span class="op">|</span>c<span class="op">]^=</span>a<span class="op">[</span> <span class="op">(</span>k<span class="op">-(</span>b<span class="op">+</span><span class="dv">1</span> <span class="op">))<<</span><span class="dv">5</span><span class="op">|</span>c<span class="op">]</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> ;++f)a[ b<<5|c] =d++,b+= e;for( f=0;f<O
|
||||
<<5|c]^= a[b<<5 |c]^=a[ (k-(b+1 ))<<5|c]</code></pre>
|
||||
<p>I hope you have a C beautifier!</p>
|
||||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||||
<p>No remarks were provided by the author.</p>
|
||||
|
||||
+12
-12
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
@@ -24,7 +24,7 @@ For more detailed information see [1984 mullender bugs](../../bugs.html#1984_mul
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./mullender.alt [microseconds]
|
||||
```
|
||||
|
||||
@@ -48,7 +48,7 @@ which is probably not as uncommon as you think :-).
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./mullender.alt
|
||||
|
||||
./mullender.alt 5000 # wait for 5000 microseconds and see what happens
|
||||
@@ -72,14 +72,14 @@ machine dependent code was discouraged.
|
||||
|
||||
### Original build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
### Original use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./mullender
|
||||
```
|
||||
|
||||
@@ -137,19 +137,19 @@ Repo](https://github.com/dspinellis/unix-history-repo/tree/Research-Release).
|
||||
`gentab.c` can be built like:
|
||||
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make gentab
|
||||
```
|
||||
|
||||
### gentab use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./gentab file
|
||||
```
|
||||
|
||||
### gentab try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./gentab gentab > g.c
|
||||
```
|
||||
|
||||
@@ -256,7 +256,7 @@ separate.
|
||||
The [PDP](https://en.wikipedia.org/wiki/Programmed_Data_Processor) and
|
||||
[VAX](https://en.wikipedia.org/wiki/VAX) codes implement the same algorithm:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
for (;;) {
|
||||
write(1, " :-)\b\b\b\b", 9);
|
||||
delay();
|
||||
@@ -284,7 +284,7 @@ We started with writing the
|
||||
We both knew [PDP-11](https://en.wikipedia.org/wiki/PDP-11) assembly so that was
|
||||
no problem. The assembly code we came up with is as follows:
|
||||
|
||||
```asm
|
||||
```<!---asm-->
|
||||
pdp:
|
||||
mov pc,r4
|
||||
tst -(r4)
|
||||
@@ -331,7 +331,7 @@ VAX code in C and massaged the
|
||||
program that we came up with is as follows:
|
||||
|
||||
|
||||
```asm
|
||||
```<!---asm-->
|
||||
vax: .word 0400 + (pdp - vax) / 2 - 1
|
||||
1:
|
||||
pushl $9
|
||||
@@ -389,7 +389,7 @@ extracted the machine code from the object file.
|
||||
> NOTE from judges: see [gentab.c](gentab.c) for a copy of this file that can be
|
||||
compiled in modern systems.
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
#include <stdio.h>
|
||||
#include <a.out.h>
|
||||
|
||||
|
||||
+103
-103
@@ -144,7 +144,7 @@ Location: <a href="../../location.html#NL">NL</a> - <em>Kingdom of the Netherlan
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<p>NOTE: the original code will not work on any system other than
|
||||
<a href="https://en.wikipedia.org/wiki/VAX-11">VAX-11</a> and
|
||||
<a href="https://en.wikipedia.org/wiki/PDP-11">PDP-11</a> and this is why we encourage you
|
||||
@@ -155,7 +155,7 @@ the original version.</p>
|
||||
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
|
||||
<p>For more detailed information see <a href="../../bugs.html#1984_mullender">1984 mullender bugs</a>.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./mullender.alt</span> <span class="pp">[</span><span class="ss">microseconds</span><span class="pp">]</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./mullender.alt [microseconds]</code></pre>
|
||||
<p>Hit ctrl-c/intr to exit the program.</p>
|
||||
<p>The default microseconds is 190000 as this is approximately how long it slept in
|
||||
the original entry but it can be no lower than 5000 as any lower doesn’t work
|
||||
@@ -169,13 +169,13 @@ overflow!</p>
|
||||
<p>BTW: is there such a thing as too fast a CPU ? :-) Actually yes for certain code
|
||||
which is probably not as uncommon as you think :-).</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./mullender.alt</span></span>
|
||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./mullender.alt</span> 5000 <span class="co"># wait for 5000 microseconds and see what happens</span></span>
|
||||
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a> <span class="ex">./mullender.alt</span> 20000 <span class="co"># wait for 20000 microseconds and see what happens</span></span>
|
||||
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a> <span class="ex">./mullender.alt</span> 100000 <span class="co"># wait for 100000 microseconds and see what happens</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./mullender.alt
|
||||
|
||||
./mullender.alt 5000 # wait for 5000 microseconds and see what happens
|
||||
|
||||
./mullender.alt 20000 # wait for 20000 microseconds and see what happens
|
||||
|
||||
./mullender.alt 100000 # wait for 100000 microseconds and see what happens</code></pre>
|
||||
<p>What happens if you hit enter after it reaches the end of the line? Why? What
|
||||
happens after some time of waiting?</p>
|
||||
<h2 id="original-code">Original code:</h2>
|
||||
@@ -184,9 +184,9 @@ happens after some time of waiting?</p>
|
||||
<a href="https://en.wikipedia.org/wiki/PDP-11">PDP-11</a>. In the following years, 1985 on,
|
||||
machine dependent code was discouraged.</p>
|
||||
<h3 id="original-build">Original build:</h3>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h3 id="original-use">Original use:</h3>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./mullender</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./mullender</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Without question, this C program is the one of the most obfuscated C program
|
||||
that has ever been received! Like all great contest entries, it resulted in a
|
||||
@@ -225,11 +225,11 @@ in the <em>fabulous</em> <a href="https://github.com/dspinellis/unix-history-rep
|
||||
Repo</a>.</p>
|
||||
<h3 id="gentab-build">gentab build:</h3>
|
||||
<p><code>gentab.c</code> can be built like:</p>
|
||||
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> gentab</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make gentab</code></pre>
|
||||
<h3 id="gentab-use">gentab use:</h3>
|
||||
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./gentab</span> file</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./gentab file</code></pre>
|
||||
<h3 id="gentab-try">gentab try:</h3>
|
||||
<div class="sourceCode" id="cb9"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./gentab</span> gentab <span class="op">></span> g.c</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./gentab gentab > g.c</code></pre>
|
||||
<p>NOTE: it is highly unlikely that you will be able to run the output of <code>gentab</code>
|
||||
but it should at least compile.</p>
|
||||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||||
@@ -312,10 +312,10 @@ that branches over the VAX code. The PDP and VAX codes are thus completely
|
||||
separate.</p>
|
||||
<p>The <a href="https://en.wikipedia.org/wiki/Programmed_Data_Processor">PDP</a> and
|
||||
<a href="https://en.wikipedia.org/wiki/VAX">VAX</a> codes implement the same algorithm:</p>
|
||||
<div class="sourceCode" id="cb10"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a> <span class="cf">for</span> <span class="op">(;;)</span> <span class="op">{</span></span>
|
||||
<span id="cb10-2"><a href="#cb10-2" aria-hidden="true" tabindex="-1"></a> write<span class="op">(</span><span class="dv">1</span><span class="op">,</span> <span class="st">" :-)</span><span class="sc">\b\b\b\b</span><span class="st">"</span><span class="op">,</span> <span class="dv">9</span><span class="op">);</span></span>
|
||||
<span id="cb10-3"><a href="#cb10-3" aria-hidden="true" tabindex="-1"></a> delay<span class="op">();</span></span>
|
||||
<span id="cb10-4"><a href="#cb10-4" aria-hidden="true" tabindex="-1"></a> <span class="op">}</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> for (;;) {
|
||||
write(1, " :-)\b\b\b\b", 9);
|
||||
delay();
|
||||
}</code></pre>
|
||||
<p>The result is that the symbols <code>:-)</code> move across the screen. <code>delay</code> is
|
||||
implemented differently on the
|
||||
<a href="https://en.wikipedia.org/wiki/Programmed_Data_Processor">PDP</a>, where we used a
|
||||
@@ -333,18 +333,18 @@ simple.</p>
|
||||
<a href="https://en.wikipedia.org/wiki/Programmed_Data_Processor">PDP</a> code in assembly.
|
||||
We both knew <a href="https://en.wikipedia.org/wiki/PDP-11">PDP-11</a> assembly so that was
|
||||
no problem. The assembly code we came up with is as follows:</p>
|
||||
<div class="sourceCode" id="cb11"><pre class="sourceCode asm"><code class="sourceCode fasm"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">pdp:</span></span>
|
||||
<span id="cb11-2"><a href="#cb11-2" aria-hidden="true" tabindex="-1"></a> <span class="bu">mov</span> pc<span class="op">,</span>r4</span>
|
||||
<span id="cb11-3"><a href="#cb11-3" aria-hidden="true" tabindex="-1"></a> tst <span class="op">-(</span>r4<span class="op">)</span></span>
|
||||
<span id="cb11-4"><a href="#cb11-4" aria-hidden="true" tabindex="-1"></a> <span class="bu">sub</span> <span class="op">$</span><span class="bn">9</span><span class="op">,</span> r4</span>
|
||||
<span id="cb11-5"><a href="#cb11-5" aria-hidden="true" tabindex="-1"></a> <span class="bu">mov</span> r4<span class="op">,</span><span class="fl">0</span><span class="bn">f</span></span>
|
||||
<span id="cb11-6"><a href="#cb11-6" aria-hidden="true" tabindex="-1"></a> <span class="bu">mov</span> <span class="op">$</span><span class="bn">1</span><span class="op">,</span> r0</span>
|
||||
<span id="cb11-7"><a href="#cb11-7" aria-hidden="true" tabindex="-1"></a> sys <span class="dv">4</span><span class="co">; 0:0; 9</span></span>
|
||||
<span id="cb11-8"><a href="#cb11-8" aria-hidden="true" tabindex="-1"></a> <span class="bu">mov</span> <span class="op">$</span><span class="bn">1000</span><span class="op">,</span> r2</span>
|
||||
<span id="cb11-9"><a href="#cb11-9" aria-hidden="true" tabindex="-1"></a> 1:</span>
|
||||
<span id="cb11-10"><a href="#cb11-10" aria-hidden="true" tabindex="-1"></a> sys <span class="dv">55</span></span>
|
||||
<span id="cb11-11"><a href="#cb11-11" aria-hidden="true" tabindex="-1"></a> sob r2<span class="op">,</span><span class="bn">1b</span></span>
|
||||
<span id="cb11-12"><a href="#cb11-12" aria-hidden="true" tabindex="-1"></a> br pdp</span></code></pre></div>
|
||||
<pre class="<!---asm-->"><code> pdp:
|
||||
mov pc,r4
|
||||
tst -(r4)
|
||||
sub $9, r4
|
||||
mov r4,0f
|
||||
mov $1, r0
|
||||
sys 4; 0:0; 9
|
||||
mov $1000, r2
|
||||
1:
|
||||
sys 55
|
||||
sob r2,1b
|
||||
br pdp</code></pre>
|
||||
<p>This is not the code we originally wrote, but it is the code that we ultimately
|
||||
used in the program. The string to be printed is shared by the
|
||||
<a href="https://en.wikipedia.org/wiki/VAX">VAX</a> and the
|
||||
@@ -373,26 +373,26 @@ VAX <a href="https://en.wikipedia.org/wiki/Assembly_language">assembly</a>, we w
|
||||
VAX code in C and massaged the
|
||||
<a href="https://en.wikipedia.org/wiki/Compiler">compiler</a> output. The VAX assembly
|
||||
program that we came up with is as follows:</p>
|
||||
<div class="sourceCode" id="cb12"><pre class="sourceCode asm"><code class="sourceCode fasm"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">vax:</span> .<span class="dt">word</span> <span class="dv">0400</span> <span class="op">+</span> <span class="op">(</span>pdp <span class="op">-</span> vax<span class="op">)</span> <span class="op">/</span> <span class="dv">2</span> <span class="op">-</span> <span class="dv">1</span></span>
|
||||
<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a> 1:</span>
|
||||
<span id="cb12-3"><a href="#cb12-3" aria-hidden="true" tabindex="-1"></a> pushl <span class="op">$</span><span class="bn">9</span></span>
|
||||
<span id="cb12-4"><a href="#cb12-4" aria-hidden="true" tabindex="-1"></a> pushal str</span>
|
||||
<span id="cb12-5"><a href="#cb12-5" aria-hidden="true" tabindex="-1"></a> pushl <span class="op">$</span><span class="bn">1</span></span>
|
||||
<span id="cb12-6"><a href="#cb12-6" aria-hidden="true" tabindex="-1"></a> calls <span class="op">$</span><span class="bn">3</span><span class="op">,</span> write</span>
|
||||
<span id="cb12-7"><a href="#cb12-7" aria-hidden="true" tabindex="-1"></a> cvtwl <span class="op">$</span><span class="bn">32767</span><span class="op">,</span> r2</span>
|
||||
<span id="cb12-8"><a href="#cb12-8" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb12-9"><a href="#cb12-9" aria-hidden="true" tabindex="-1"></a> 2:</span>
|
||||
<span id="cb12-10"><a href="#cb12-10" aria-hidden="true" tabindex="-1"></a> decl r2</span>
|
||||
<span id="cb12-11"><a href="#cb12-11" aria-hidden="true" tabindex="-1"></a> jneq <span class="dv">2</span><span class="er">b</span></span>
|
||||
<span id="cb12-12"><a href="#cb12-12" aria-hidden="true" tabindex="-1"></a> jbr <span class="bn">1b</span></span>
|
||||
<span id="cb12-13"><a href="#cb12-13" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb12-14"><a href="#cb12-14" aria-hidden="true" tabindex="-1"></a> <span class="fu">write:</span> .<span class="dt">word</span> <span class="dv">0</span></span>
|
||||
<span id="cb12-15"><a href="#cb12-15" aria-hidden="true" tabindex="-1"></a> chmk <span class="op">$</span><span class="bn">4</span></span>
|
||||
<span id="cb12-16"><a href="#cb12-16" aria-hidden="true" tabindex="-1"></a> <span class="cf">ret</span></span>
|
||||
<span id="cb12-17"><a href="#cb12-17" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb12-18"><a href="#cb12-18" aria-hidden="true" tabindex="-1"></a> <span class="fu">str:</span> .ascii <span class="st">" :-)\b\b\b\b"</span></span>
|
||||
<span id="cb12-19"><a href="#cb12-19" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb12-20"><a href="#cb12-20" aria-hidden="true" tabindex="-1"></a> <span class="fu">pdp:</span> .<span class="dt">word</span> <span class="dv">4548</span><span class="op">,</span> <span class="dv">3044</span><span class="op">,</span> <span class="dv">58820</span><span class="op">,</span> <span class="dv">9</span><span class="op">,</span> <span class="dv">4407</span><span class="op">,</span> <span class="dv">6</span><span class="op">,</span> <span class="dv">5568</span><span class="op">,</span> <span class="dv">1</span><span class="op">,</span> <span class="dv">35076</span><span class="op">,</span> <span class="dv">0</span><span class="op">,</span> <span class="dv">9</span><span class="op">,</span> <span class="dv">5570</span><span class="op">,</span> <span class="dv">512</span><span class="op">,</span> <span class="dv">35117</span><span class="op">,</span> <span class="dv">32386</span><span class="op">,</span> <span class="dv">496</span></span></code></pre></div>
|
||||
<pre class="<!---asm-->"><code> vax: .word 0400 + (pdp - vax) / 2 - 1
|
||||
1:
|
||||
pushl $9
|
||||
pushal str
|
||||
pushl $1
|
||||
calls $3, write
|
||||
cvtwl $32767, r2
|
||||
|
||||
2:
|
||||
decl r2
|
||||
jneq 2b
|
||||
jbr 1b
|
||||
|
||||
write: .word 0
|
||||
chmk $4
|
||||
ret
|
||||
|
||||
str: .ascii " :-)\b\b\b\b"
|
||||
|
||||
pdp: .word 4548, 3044, 58820, 9, 4407, 6, 5568, 1, 35076, 0, 9, 5570, 512, 35117, 32386, 496</code></pre>
|
||||
<p>The first word (after the label <code>vax</code>) is the
|
||||
<a href="https://en.wikipedia.org/wiki/Programmed_Data_Processor">PDP</a> <a href="https://en.wikipedia.org/wiki/Branch_(computer_science)">branch
|
||||
instruction</a>.
|
||||
@@ -426,59 +426,59 @@ extracted the machine code from the object file.</p>
|
||||
<p>NOTE from judges: see <a href="gentab.c">gentab.c</a> for a copy of this file that can be
|
||||
compiled in modern systems.</p>
|
||||
</blockquote>
|
||||
<div class="sourceCode" id="cb13"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a> <span class="pp">#include </span><span class="im"><stdio.h></span></span>
|
||||
<span id="cb13-2"><a href="#cb13-2" aria-hidden="true" tabindex="-1"></a> <span class="pp">#include </span><span class="im"><a.out.h></span></span>
|
||||
<span id="cb13-3"><a href="#cb13-3" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb13-4"><a href="#cb13-4" aria-hidden="true" tabindex="-1"></a> main<span class="op">(</span>argc<span class="op">,</span> argv<span class="op">)</span> <span class="dt">char</span> <span class="op">**</span>argv<span class="op">;</span></span>
|
||||
<span id="cb13-5"><a href="#cb13-5" aria-hidden="true" tabindex="-1"></a> <span class="op">{</span></span>
|
||||
<span id="cb13-6"><a href="#cb13-6" aria-hidden="true" tabindex="-1"></a> <span class="dt">register</span> <span class="dt">FILE</span> <span class="op">*</span>fp<span class="op">;</span></span>
|
||||
<span id="cb13-7"><a href="#cb13-7" aria-hidden="true" tabindex="-1"></a> <span class="dt">register</span> <span class="dt">short</span> pos <span class="op">=</span> <span class="dv">0</span><span class="op">,</span> c<span class="op">,</span> n<span class="op">;</span></span>
|
||||
<span id="cb13-8"><a href="#cb13-8" aria-hidden="true" tabindex="-1"></a> <span class="dt">register</span> <span class="dt">char</span> <span class="op">*</span>fmt<span class="op">;</span></span>
|
||||
<span id="cb13-9"><a href="#cb13-9" aria-hidden="true" tabindex="-1"></a> <span class="cf">if</span> <span class="op">(</span>argc <span class="op">!=</span> <span class="dv">2</span><span class="op">)</span> <span class="op">{</span></span>
|
||||
<span id="cb13-10"><a href="#cb13-10" aria-hidden="true" tabindex="-1"></a> fprintf <span class="op">(</span>stderr<span class="op">,</span> <span class="st">"Usage: </span><span class="sc">%s</span><span class="st"> file</span><span class="sc">\n</span><span class="st">"</span><span class="op">,</span> argv<span class="op">[</span><span class="dv">0</span><span class="op">]);</span></span>
|
||||
<span id="cb13-11"><a href="#cb13-11" aria-hidden="true" tabindex="-1"></a> exit <span class="op">(</span><span class="dv">1</span><span class="op">);</span></span>
|
||||
<span id="cb13-12"><a href="#cb13-12" aria-hidden="true" tabindex="-1"></a> <span class="op">}</span></span>
|
||||
<span id="cb13-13"><a href="#cb13-13" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb13-14"><a href="#cb13-14" aria-hidden="true" tabindex="-1"></a> <span class="cf">if</span> <span class="op">((</span>fp <span class="op">=</span> fopen<span class="op">(</span>argv<span class="op">[</span><span class="dv">1</span><span class="op">],</span> <span class="st">"r"</span><span class="op">))</span> <span class="op">==</span> NULL<span class="op">)</span> <span class="op">{</span></span>
|
||||
<span id="cb13-15"><a href="#cb13-15" aria-hidden="true" tabindex="-1"></a> fprintf<span class="op">(</span>stderr<span class="op">,</span> <span class="st">"</span><span class="sc">%s</span><span class="st">: can't open </span><span class="sc">%s\n</span><span class="st">"</span><span class="op">,</span> argv<span class="op">[</span><span class="dv">0</span><span class="op">],</span> argv<span class="op">[</span><span class="dv">1</span><span class="op">]);</span></span>
|
||||
<span id="cb13-16"><a href="#cb13-16" aria-hidden="true" tabindex="-1"></a> exit<span class="op">(</span><span class="dv">2</span><span class="op">);</span></span>
|
||||
<span id="cb13-17"><a href="#cb13-17" aria-hidden="true" tabindex="-1"></a> <span class="op">}</span></span>
|
||||
<span id="cb13-18"><a href="#cb13-18" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb13-19"><a href="#cb13-19" aria-hidden="true" tabindex="-1"></a> fseek <span class="op">(</span>fp<span class="op">,</span> <span class="op">(</span><span class="dt">long</span><span class="op">)</span> <span class="kw">sizeof</span> <span class="op">(</span><span class="kw">struct</span> exec<span class="op">),</span> <span class="dv">0</span><span class="op">);</span></span>
|
||||
<span id="cb13-20"><a href="#cb13-20" aria-hidden="true" tabindex="-1"></a> printf<span class="op">(</span><span class="st">"/* portable between VAX and PDP11 */</span><span class="sc">\n\n</span><span class="st">"</span><span class="op">);</span></span>
|
||||
<span id="cb13-21"><a href="#cb13-21" aria-hidden="true" tabindex="-1"></a> printf <span class="op">(</span><span class="st">"short main[] = {</span><span class="sc">\n</span><span class="st">"</span><span class="op">);</span></span>
|
||||
<span id="cb13-22"><a href="#cb13-22" aria-hidden="true" tabindex="-1"></a> <span class="cf">for</span> <span class="op">(;;)</span> <span class="op">{</span></span>
|
||||
<span id="cb13-23"><a href="#cb13-23" aria-hidden="true" tabindex="-1"></a> <span class="cf">if</span> <span class="op">(</span>pos <span class="op">==</span> <span class="dv">0</span><span class="op">)</span></span>
|
||||
<span id="cb13-24"><a href="#cb13-24" aria-hidden="true" tabindex="-1"></a> printf<span class="op">(</span><span class="st">"</span><span class="sc">\t</span><span class="st">"</span><span class="op">);</span></span>
|
||||
<span id="cb13-25"><a href="#cb13-25" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb13-26"><a href="#cb13-26" aria-hidden="true" tabindex="-1"></a> c<span class="op">=</span>getc<span class="op">(</span>fp<span class="op">)</span> <span class="op">&</span> <span class="bn">0377</span><span class="op">;</span></span>
|
||||
<span id="cb13-27"><a href="#cb13-27" aria-hidden="true" tabindex="-1"></a> <span class="cf">if</span> <span class="op">(</span>feof<span class="op">(</span>fp<span class="op">))</span> <span class="cf">break</span><span class="op">;</span></span>
|
||||
<span id="cb13-28"><a href="#cb13-28" aria-hidden="true" tabindex="-1"></a> n <span class="op">=</span> getc<span class="op">(</span>fp<span class="op">)</span> <span class="op"><<</span> <span class="dv">8</span><span class="op">|</span>c<span class="op">;</span></span>
|
||||
<span id="cb13-29"><a href="#cb13-29" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb13-30"><a href="#cb13-30" aria-hidden="true" tabindex="-1"></a> <span class="cf">switch</span> <span class="op">(</span>rand<span class="op">()</span> <span class="op">%</span> <span class="dv">5</span><span class="op">)</span> <span class="op">{</span></span>
|
||||
<span id="cb13-31"><a href="#cb13-31" aria-hidden="true" tabindex="-1"></a> <span class="cf">case</span> <span class="dv">0</span><span class="op">:</span></span>
|
||||
<span id="cb13-32"><a href="#cb13-32" aria-hidden="true" tabindex="-1"></a> <span class="cf">case</span> <span class="dv">1</span><span class="op">:</span></span>
|
||||
<span id="cb13-33"><a href="#cb13-33" aria-hidden="true" tabindex="-1"></a> fmt <span class="op">=</span> <span class="st">"</span><span class="sc">%d</span><span class="st">"</span><span class="op">;</span> <span class="cf">break</span><span class="op">;</span></span>
|
||||
<span id="cb13-34"><a href="#cb13-34" aria-hidden="true" tabindex="-1"></a> <span class="cf">case</span> <span class="dv">2</span><span class="op">:</span></span>
|
||||
<span id="cb13-35"><a href="#cb13-35" aria-hidden="true" tabindex="-1"></a> fmt <span class="op">=</span> <span class="st">"</span><span class="sc">%u</span><span class="st">"</span><span class="op">;</span> <span class="cf">break</span><span class="op">;</span></span>
|
||||
<span id="cb13-36"><a href="#cb13-36" aria-hidden="true" tabindex="-1"></a> <span class="cf">case</span> <span class="dv">3</span><span class="op">:</span></span>
|
||||
<span id="cb13-37"><a href="#cb13-37" aria-hidden="true" tabindex="-1"></a> fmt <span class="op">=</span> <span class="st">"0</span><span class="sc">%o</span><span class="st">"</span><span class="op">;</span> <span class="cf">break</span><span class="op">;</span></span>
|
||||
<span id="cb13-38"><a href="#cb13-38" aria-hidden="true" tabindex="-1"></a> <span class="cf">case</span> <span class="dv">4</span><span class="op">:</span></span>
|
||||
<span id="cb13-39"><a href="#cb13-39" aria-hidden="true" tabindex="-1"></a> fmt <span class="op">=</span> <span class="st">"0x</span><span class="sc">%x</span><span class="st">"</span><span class="op">;</span> <span class="cf">break</span><span class="op">;</span></span>
|
||||
<span id="cb13-40"><a href="#cb13-40" aria-hidden="true" tabindex="-1"></a> <span class="op">}</span></span>
|
||||
<span id="cb13-41"><a href="#cb13-41" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb13-42"><a href="#cb13-42" aria-hidden="true" tabindex="-1"></a> <span class="cf">if</span> <span class="op">(</span><span class="dv">32</span> <span class="op"><=</span> n <span class="op">&&</span> n <span class="op"><</span> <span class="dv">127</span> <span class="op">&&</span> <span class="op">(</span>rand<span class="op">()</span> <span class="op">%</span> <span class="dv">4</span><span class="op">))</span> fmt <span class="op">=</span> <span class="st">"'</span><span class="sc">%c</span><span class="st">'"</span><span class="op">;</span></span>
|
||||
<span id="cb13-43"><a href="#cb13-43" aria-hidden="true" tabindex="-1"></a> printf<span class="op">(</span>n <span class="op"><</span> <span class="dv">8</span> <span class="op">?</span> <span class="st">"</span><span class="sc">%d</span><span class="st">"</span> <span class="op">:</span> fmt<span class="op">,</span> n<span class="op">);</span></span>
|
||||
<span id="cb13-44"><a href="#cb13-44" aria-hidden="true" tabindex="-1"></a> printf<span class="op">(</span><span class="st">","</span><span class="op">);</span></span>
|
||||
<span id="cb13-45"><a href="#cb13-45" aria-hidden="true" tabindex="-1"></a> <span class="cf">if</span> <span class="op">(</span>pos<span class="op">++</span> <span class="op">==</span> <span class="dv">8</span><span class="op">)</span> <span class="op">{</span></span>
|
||||
<span id="cb13-46"><a href="#cb13-46" aria-hidden="true" tabindex="-1"></a> printf<span class="op">(</span><span class="st">"</span><span class="sc">\n</span><span class="st">"</span><span class="op">);</span></span>
|
||||
<span id="cb13-47"><a href="#cb13-47" aria-hidden="true" tabindex="-1"></a> pos <span class="op">=</span> <span class="dv">0</span><span class="op">;</span></span>
|
||||
<span id="cb13-48"><a href="#cb13-48" aria-hidden="true" tabindex="-1"></a> <span class="op">}</span></span>
|
||||
<span id="cb13-49"><a href="#cb13-49" aria-hidden="true" tabindex="-1"></a> <span class="cf">else</span> printf<span class="op">(</span><span class="st">" "</span><span class="op">);</span></span>
|
||||
<span id="cb13-50"><a href="#cb13-50" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb13-51"><a href="#cb13-51" aria-hidden="true" tabindex="-1"></a> printf<span class="op">(</span><span class="st">"};</span><span class="sc">\n</span><span class="st">"</span><span class="op">);</span></span>
|
||||
<span id="cb13-52"><a href="#cb13-52" aria-hidden="true" tabindex="-1"></a> <span class="op">}</span></span>
|
||||
<span id="cb13-53"><a href="#cb13-53" aria-hidden="true" tabindex="-1"></a> <span class="op">}</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> #include <stdio.h>
|
||||
#include <a.out.h>
|
||||
|
||||
main(argc, argv) char **argv;
|
||||
{
|
||||
register FILE *fp;
|
||||
register short pos = 0, c, n;
|
||||
register char *fmt;
|
||||
if (argc != 2) {
|
||||
fprintf (stderr, "Usage: %s file\n", argv[0]);
|
||||
exit (1);
|
||||
}
|
||||
|
||||
if ((fp = fopen(argv[1], "r")) == NULL) {
|
||||
fprintf(stderr, "%s: can't open %s\n", argv[0], argv[1]);
|
||||
exit(2);
|
||||
}
|
||||
|
||||
fseek (fp, (long) sizeof (struct exec), 0);
|
||||
printf("/* portable between VAX and PDP11 */\n\n");
|
||||
printf ("short main[] = {\n");
|
||||
for (;;) {
|
||||
if (pos == 0)
|
||||
printf("\t");
|
||||
|
||||
c=getc(fp) & 0377;
|
||||
if (feof(fp)) break;
|
||||
n = getc(fp) << 8|c;
|
||||
|
||||
switch (rand() % 5) {
|
||||
case 0:
|
||||
case 1:
|
||||
fmt = "%d"; break;
|
||||
case 2:
|
||||
fmt = "%u"; break;
|
||||
case 3:
|
||||
fmt = "0%o"; break;
|
||||
case 4:
|
||||
fmt = "0x%x"; break;
|
||||
}
|
||||
|
||||
if (32 <= n && n < 127 && (rand() % 4)) fmt = "'%c'";
|
||||
printf(n < 8 ? "%d" : fmt, n);
|
||||
printf(",");
|
||||
if (pos++ == 8) {
|
||||
printf("\n");
|
||||
pos = 0;
|
||||
}
|
||||
else printf(" ");
|
||||
|
||||
printf("};\n");
|
||||
}
|
||||
}</code></pre>
|
||||
<p>As can be seen, there is a slight preference for decimal, and also a character
|
||||
format is sometimes used, but only if the data is a printable ASCII character.</p>
|
||||
<p>When we ran this program, we were almost completely satisfied with the result.
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./applin
|
||||
```
|
||||
|
||||
|
||||
@@ -144,9 +144,9 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./applin</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./applin</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>One liner programs are short but twisted. This “Hello, world!” version
|
||||
certainly takes its time saying hello.</p>
|
||||
|
||||
@@ -1,20 +1,20 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./august
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
@@ -22,7 +22,7 @@ If you have the `primes(6)` tool (sometimes part of [BSD
|
||||
Games](https://github.com/vattam/BSDGames)) you can see
|
||||
what of the output in the first `N` (say `15` or `25`) lines are primes:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./primes.sh # 15
|
||||
./primes.sh 25
|
||||
```
|
||||
|
||||
@@ -141,16 +141,16 @@ Location: <a href="../../location.html#SE">SE</a> - <em>Kingdom of Sweden</em> (
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./august</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./august</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<p>If you have the <code>primes(6)</code> tool (sometimes part of <a href="https://github.com/vattam/BSDGames">BSD
|
||||
Games</a>) you can see
|
||||
what of the output in the first <code>N</code> (say <code>15</code> or <code>25</code>) lines are primes:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./primes.sh</span> <span class="co"># 15</span></span>
|
||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./primes.sh</span> 25</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./primes.sh # 15
|
||||
./primes.sh 25</code></pre>
|
||||
<p>Note that <code>try.sh</code> will run this script anyway, telling you where to get
|
||||
<code>primes(6)</code> if you don’t have it installed, but it will only run with the
|
||||
default value of 15, rather than trying several different values.</p>
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./lycklama.alt < some_file
|
||||
```
|
||||
|
||||
@@ -24,13 +24,13 @@ call with a configurable time to sleep. The default is 500 microseconds but you
|
||||
reconfigure it like:
|
||||
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make SLEEP=700 clobber alt
|
||||
```
|
||||
|
||||
which would set it at 700. Then, whether you use the default value or not, try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.alt.sh
|
||||
```
|
||||
|
||||
@@ -45,21 +45,21 @@ modern systems.
|
||||
|
||||
### Original build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
### Original use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./lycklama < some_file
|
||||
```
|
||||
|
||||
|
||||
### Original try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./lycklama < lycklama.c
|
||||
./lycklama < lycklama.alt.c
|
||||
./lycklama < lycklama.orig.c
|
||||
|
||||
+10
-10
@@ -141,9 +141,9 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./lycklama.alt</span> <span class="op"><</span> some_file</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./lycklama.alt < some_file</code></pre>
|
||||
<p>To see why we recommend the alternate version instead of the original version,
|
||||
see below and the <a href="#original-code">Original code</a> section.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
@@ -152,23 +152,23 @@ original, slows down the output so that you can see what it looked like back in
|
||||
This will be more enjoyable. It is slowed down by the <code>usleep(3)</code> library
|
||||
call with a configurable time to sleep. The default is 500 microseconds but you can
|
||||
reconfigure it like:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> SLEEP=700 clobber alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make SLEEP=700 clobber alt</code></pre>
|
||||
<p>which would set it at 700. Then, whether you use the default value or not, try:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.alt.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.alt.sh</code></pre>
|
||||
<h2 id="original-code">Original code:</h2>
|
||||
<p>As explained above, because modern systems run this entry way too fast to fully
|
||||
appreciate what it does, we encourage you to first try the alternate version.
|
||||
After this, however, you might wish to try the original version, fixed for
|
||||
modern systems.</p>
|
||||
<h3 id="original-build">Original build:</h3>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h3 id="original-use">Original use:</h3>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./lycklama</span> <span class="op"><</span> some_file</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./lycklama < some_file</code></pre>
|
||||
<h3 id="original-try">Original try:</h3>
|
||||
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./lycklama</span> <span class="op"><</span> lycklama.c</span>
|
||||
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./lycklama</span> <span class="op"><</span> lycklama.alt.c</span>
|
||||
<span id="cb7-3"><a href="#cb7-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./lycklama</span> <span class="op"><</span> lycklama.orig.c</span>
|
||||
<span id="cb7-4"><a href="#cb7-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">./lycklama</span> <span class="op"><</span> Makefile</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./lycklama < lycklama.c
|
||||
./lycklama < lycklama.alt.c
|
||||
./lycklama < lycklama.orig.c
|
||||
./lycklama < Makefile</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Run the program, redirecting a file into it, and notice how it redisplays it.
|
||||
The program itself looks like tty noise.</p>
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -10,7 +10,7 @@ There is alternate code which allows one to change the size of the maze. See
|
||||
|
||||
### To run:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./shapiro
|
||||
```
|
||||
|
||||
@@ -23,7 +23,7 @@ of the maze. The alt code allows one to easily do this.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
@@ -32,7 +32,7 @@ of the maze. The alt code allows one to easily do this.
|
||||
|
||||
If you wish to change the value you can do it like:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make clobber SIZE=5 alt
|
||||
```
|
||||
|
||||
@@ -41,7 +41,7 @@ error. If it's <= 0 || >= 5000 then it is set to 39, the default.
|
||||
|
||||
You might also wish to try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.alt.sh
|
||||
```
|
||||
|
||||
|
||||
@@ -141,23 +141,23 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>There is alternate code which allows one to change the size of the maze. See
|
||||
<a href="#alternate-code">Alternate code</a> below.</p>
|
||||
<h3 id="to-run">To run:</h3>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./shapiro</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./shapiro</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>The code has a define <code>C</code> set to 39 but this can be modified to change the size
|
||||
of the maze. The alt code allows one to easily do this.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<h3 id="alternate-try">Alternate try:</h3>
|
||||
<p>If you wish to change the value you can do it like:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> clobber SIZE=5 alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make clobber SIZE=5 alt</code></pre>
|
||||
<p>Note that if it is not a number then obviously there will be a compilation
|
||||
error. If it’s <= 0 || >= 5000 then it is set to 39, the default.</p>
|
||||
<p>You might also wish to try:</p>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.alt.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.alt.sh</code></pre>
|
||||
<p>This script will compile the program five times with a random value and then
|
||||
prompt you in an infinite loop for values to try, exiting only if non-digits are
|
||||
in the input.</p>
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -11,7 +11,7 @@ more details on it.
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./sicherman < file
|
||||
|
||||
echo foo | ./sicherman
|
||||
@@ -23,7 +23,7 @@ more details on it.
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
@@ -43,7 +43,7 @@ audience.
|
||||
Although this will be built if the original fails to compile you can do it
|
||||
manually like:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
@@ -52,14 +52,14 @@ In this case it will be built as `sicherman.alt`.
|
||||
|
||||
### Alternate use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./sicherman.alt < file
|
||||
```
|
||||
|
||||
|
||||
### Alternate try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.alt.sh
|
||||
```
|
||||
|
||||
@@ -80,7 +80,7 @@ on a line. Now enter the letters 'n' through 'z'. But to borrow a quote
|
||||
from Richard Stallman: If you think you understand what this code
|
||||
does, then you don't, so read it again! Explain why:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./sicherman < sicherman.c | ./sicherman | diff - ./sicherman.c
|
||||
```
|
||||
|
||||
|
||||
+12
-12
@@ -141,19 +141,19 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>There is another version that will be compiled in case the first fails. This
|
||||
should happen automatically. See <a href="#alternate-code">Alternate code</a> below for
|
||||
more details on it.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./sicherman</span> <span class="op"><</span> file</span>
|
||||
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> foo <span class="kw">|</span> <span class="ex">./sicherman</span></span>
|
||||
<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb2-5"><a href="#cb2-5" aria-hidden="true" tabindex="-1"></a> <span class="ex">./sicherman</span></span>
|
||||
<span id="cb2-6"><a href="#cb2-6" aria-hidden="true" tabindex="-1"></a> <span class="co"># type or paste some text, making sure to hit enter after each line typed</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./sicherman < file
|
||||
|
||||
echo foo | ./sicherman
|
||||
|
||||
./sicherman
|
||||
# type or paste some text, making sure to hit enter after each line typed</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>The <a href="sicherman.alt.c">sicherman.alt.c</a> is a slight change in the fixed version
|
||||
(fixed so it does not require <code>-traditional-cpp</code>) in that it has two args to
|
||||
@@ -164,12 +164,12 @@ audience.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<p>Although this will be built if the original fails to compile you can do it
|
||||
manually like:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<p>In this case it will be built as <code>sicherman.alt</code>.</p>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./sicherman.alt</span> <span class="op"><</span> file</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./sicherman.alt < file</code></pre>
|
||||
<h3 id="alternate-try">Alternate try:</h3>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.alt.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.alt.sh</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>This program abuses the C preprocessor so much that some <code>cpp</code>s fail to strip
|
||||
out all of the comments on the first pass! If you were able to understand
|
||||
@@ -182,7 +182,7 @@ Like the program says, what’s that mean?</p>
|
||||
on a line. Now enter the letters ‘n’ through ‘z’. But to borrow a quote
|
||||
from Richard Stallman: If you think you understand what this code
|
||||
does, then you don’t, so read it again! Explain why:</p>
|
||||
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./sicherman</span> <span class="op"><</span> sicherman.c <span class="kw">|</span> <span class="ex">./sicherman</span> <span class="kw">|</span> <span class="fu">diff</span> <span class="at">-</span> ./sicherman.c</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./sicherman < sicherman.c | ./sicherman | diff - ./sicherman.c</code></pre>
|
||||
<p>results in diff reporting a difference on some machines.</p>
|
||||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||||
<p>No remarks were provided by the author.</p>
|
||||
|
||||
@@ -1,20 +1,20 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./applin
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./applin.c
|
||||
```
|
||||
|
||||
|
||||
@@ -141,11 +141,11 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./applin</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./applin</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./applin.c</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./applin.c</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>The judges were so amused by this little program that we created an
|
||||
award just for it. This program is portable to the C and Fortran 77
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -18,7 +18,7 @@ For more detailed information see [1986 august bugs](../../bugs.html#1986_august
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./august
|
||||
```
|
||||
|
||||
|
||||
@@ -141,13 +141,13 @@ Location: <a href="../../location.html#SE">SE</a> - <em>Kingdom of Sweden</em> (
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
|
||||
<p>The current status of this entry is:</p>
|
||||
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
|
||||
<p>For more detailed information see <a href="../../bugs.html#1986_august">1986 august bugs</a>.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./august</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./august</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>This program computes a specific mathematical value. Simply compile
|
||||
and give it an infinite amount of stack space and CPU time. Otherwise
|
||||
|
||||
@@ -1,20 +1,20 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./bright some_file
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
|
||||
@@ -141,11 +141,11 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./bright</span> some_file</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./bright some_file</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Compile this program and give a filename as an argument.</p>
|
||||
<p>Mr. Bright exploits the C pre-processor, similar variables and
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./hague 2>/dev/null
|
||||
# enter some text
|
||||
```
|
||||
@@ -15,7 +15,7 @@
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
|
||||
@@ -141,12 +141,12 @@ Location: <a href="../../location.html#GB">GB</a> - <em>United Kingdom of Great
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./hague</span> <span class="dv">2</span><span class="op">></span>/dev/null</span>
|
||||
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="co"># enter some text</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./hague 2>/dev/null
|
||||
# enter some text</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<p>Note that you can run the program without feeding it anything and then type in a
|
||||
message and line by line it will show the right output. Notice also how certain
|
||||
characters will print a <code>?</code>.</p>
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./holloway
|
||||
```
|
||||
|
||||
|
||||
@@ -141,9 +141,9 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./holloway</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./holloway</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Believe it or not, this is the old standard “Hello, world” program
|
||||
performed in a very complex way. The judges and the author defy you
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -18,7 +18,7 @@ if nothing else.
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./marshall
|
||||
```
|
||||
|
||||
@@ -36,14 +36,14 @@ instead offer the problematic code as an alternate version whereas
|
||||
To see if your compiler has the problems noted:
|
||||
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
|
||||
### Alternate use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./marshall.alt
|
||||
```
|
||||
|
||||
|
||||
@@ -162,7 +162,7 @@ because of the call to <code>_exit()</code> (see below).</p>
|
||||
enable the optimiser clang will generate code that prints the string twice and
|
||||
dumps core just like before! What about the call to <code>_exit()</code>?</p>
|
||||
<p>The call was:</p>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> _exit<span class="op">(</span>argv<span class="op">[(</span><span class="dt">int</span><span class="op">)*</span>argc<span class="op">-</span><span class="dv">2</span><span class="op">/</span>cc<span class="op">[</span><span class="dv">1</span><span class="op">*(</span><span class="dt">int</span><span class="op">)*</span>argc<span class="op">]|-</span><span class="dv">1</span><span class="op"><<</span><span class="dv">4</span><span class="op">]);</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> _exit(argv[(int)*argc-2/cc[1*(int)*argc]|-1<<4]);</code></pre>
|
||||
<p>Changing it to not refer to these variables and just exit 1 and the problems
|
||||
disappear!</p>
|
||||
<h3 id="macos">macOS</h3>
|
||||
@@ -172,9 +172,9 @@ it works fine but if it’s disabled it prints out the string and then enters an
|
||||
infinite loop!</p>
|
||||
<p>After we fix the infinite loop if we change the <code>_exit()</code> call in macOS and
|
||||
disable the optimiser we might get something like:</p>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">$</span> ./marshall</span>
|
||||
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">choo</span> choo</span>
|
||||
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">Segmentation</span> fault: 11</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> $ ./marshall
|
||||
choo choo
|
||||
Segmentation fault: 11</code></pre>
|
||||
<p>Observe how it doesn’t print it twice. But of course it segfaults so it’s not
|
||||
right either.</p>
|
||||
<p>If the optimiser is enabled, however, we will see that it works fine before the
|
||||
|
||||
@@ -54,7 +54,7 @@ dumps core just like before! What about the call to `_exit()`?
|
||||
The call was:
|
||||
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
_exit(argv[(int)*argc-2/cc[1*(int)*argc]|-1<<4]);
|
||||
```
|
||||
|
||||
@@ -72,7 +72,7 @@ infinite loop!
|
||||
After we fix the infinite loop if we change the `_exit()` call in macOS and
|
||||
disable the optimiser we might get something like:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
$ ./marshall
|
||||
choo choo
|
||||
Segmentation fault: 11
|
||||
|
||||
@@ -141,7 +141,7 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>NOTE: we FORCE disable the optimiser due to a funny problem with different
|
||||
compilers and systems. See below and <a href="compilers.html">compilers.html</a> for details.</p>
|
||||
<p>There is an <a href="#alternate-code">alternate version</a>. The reason is a funny problem:
|
||||
@@ -152,7 +152,7 @@ might work but the other one would not. We describe this in more detail in
|
||||
<a href="compilers.html">compilers.html</a> and we encourage you to read it for entertainment
|
||||
if nothing else.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./marshall</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./marshall</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>Due to the different <a href="compilers.html">conflicting problems</a> with gcc and clang, we
|
||||
instead offer the problematic code as an alternate version whereas
|
||||
@@ -160,9 +160,9 @@ instead offer the problematic code as an alternate version whereas
|
||||
<code>_exit()</code> commented out, changing the value passed into <code>_exit()</code> to <code>1</code>.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<p>To see if your compiler has the problems noted:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./marshall.alt</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./marshall.alt</code></pre>
|
||||
<p>Does it work in your system? That is does it not segfault, does it print it only
|
||||
once and does it not enter an infinite loop? Or more generally does it print the
|
||||
text exactly once and then exit?</p>
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./pawka
|
||||
```
|
||||
|
||||
|
||||
@@ -141,9 +141,9 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./pawka</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./pawka</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>The judges found this entry to be one of hardest to read without the
|
||||
aid of <code>/lib/cpp</code> and a good editor. When run, the program asks if it
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./stein $(printf "\015\015"); echo
|
||||
```
|
||||
|
||||
@@ -24,7 +24,7 @@ The `\015` in the above `printf(1)` command produces a control-N.
|
||||
One some machines, a control-M control-N arg is needed
|
||||
to get the command to output cleanly:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./stein $(printf "\014\015"); echo
|
||||
```
|
||||
|
||||
|
||||
@@ -141,9 +141,9 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./stein</span> <span class="va">$(</span><span class="bu">printf</span> <span class="st">"\015\015"</span><span class="va">)</span><span class="kw">;</span> <span class="bu">echo</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./stein $(printf "\015\015"); echo</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>NOTE: to avoid problems with news and mail, the single line was split
|
||||
into 3 lines. Join all lines into a single line to recreate
|
||||
@@ -151,7 +151,7 @@ the original file.</p>
|
||||
<p>The <code>\015</code> in the above <code>printf(1)</code> command produces a control-N.</p>
|
||||
<p>One some machines, a control-M control-N arg is needed
|
||||
to get the command to output cleanly:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./stein</span> <span class="va">$(</span><span class="bu">printf</span> <span class="st">"\014\015"</span><span class="va">)</span><span class="kw">;</span> <span class="bu">echo</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./stein $(printf "\014\015"); echo</code></pre>
|
||||
<p>Your system may require another set of characters.
|
||||
In time, you will figure out what it does. :-)</p>
|
||||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||||
|
||||
+2
-2
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./wall
|
||||
```
|
||||
|
||||
|
||||
@@ -141,9 +141,9 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./wall</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./wall</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>The original version did not have a ‘;’ character in the first line.
|
||||
This caused a number of System V C pre-preprocessors to gripe about a
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
some_command | ./biggar | od -c
|
||||
|
||||
./biggar < file | od -c
|
||||
@@ -16,7 +16,7 @@
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
|
||||
@@ -141,13 +141,13 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">some_command</span> <span class="kw">|</span> <span class="ex">./biggar</span> <span class="kw">|</span> <span class="fu">od</span> <span class="at">-c</span></span>
|
||||
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./biggar</span> <span class="op"><</span> file <span class="kw">|</span> <span class="fu">od</span> <span class="at">-c</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> some_command | ./biggar | od -c
|
||||
|
||||
./biggar < file | od -c</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>By changing the compile line you can make this program do anything you
|
||||
want. This is a very efficient way to transfer source, though it
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -10,7 +10,7 @@ To compile on a 16 bit machine, change 300000 to 30000.
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./heckbert col < file
|
||||
```
|
||||
|
||||
@@ -19,7 +19,7 @@ where col is the number of columns to fold at and file is the file to fold.
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
@@ -28,7 +28,7 @@ where col is the number of columns to fold at and file is the file to fold.
|
||||
|
||||
Folding at the wrong length may be equivalent to a "Spindle or Mutilate" operation. For example:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./heckbert 40 < heckbert.c > ph.c ; make ph ; ./ph 20 < heckbert.c > bar.c ; make bar
|
||||
```
|
||||
|
||||
|
||||
@@ -141,17 +141,17 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>On System V systems, we had to compile with <code>-Dindex=strchr</code>.
|
||||
To compile on a 16 bit machine, change 300000 to 30000.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./heckbert</span> col <span class="op"><</span> file</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./heckbert col < file</code></pre>
|
||||
<p>where col is the number of columns to fold at and file is the file to fold.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Folding at the wrong length may be equivalent to a “Spindle or Mutilate” operation. For example:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./heckbert</span> 40 <span class="op"><</span> heckbert.c <span class="op">></span> ph.c <span class="kw">;</span> <span class="fu">make</span> ph <span class="kw">;</span> <span class="ex">./ph</span> 20 <span class="op"><</span> heckbert.c <span class="op">></span> bar.c <span class="kw">;</span> <span class="fu">make</span> bar</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./heckbert 40 < heckbert.c > ph.c ; make ph ; ./ph 20 < heckbert.c > bar.c ; make bar</code></pre>
|
||||
<p>Try not to
|
||||
<a href="https://repository.library.brown.edu/studio/item/bdr:788264/PDF/">Fold, Spindle or Mutilate</a>
|
||||
files. :-)</p>
|
||||
|
||||
@@ -1,20 +1,20 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./hines file.c
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
|
||||
@@ -141,11 +141,11 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./hines</span> file.c</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./hines file.c</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>This program was designed to maximize the bother function for
|
||||
structured programmers. This program takes <code>goto</code> statements to their
|
||||
|
||||
+6
-6
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./korn
|
||||
```
|
||||
|
||||
@@ -29,14 +29,14 @@ Several points are important to understand this program:
|
||||
2. What is the value of the symbol `"have"`? (hint: the value is NOT 4
|
||||
characters, or `'h'`, or a string) Consider the fact that:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
char *x;
|
||||
```
|
||||
|
||||
defines a pointer to a `char` (i.e. an address), and that the `=` assigns
|
||||
things of compatible types. Since:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
x = "have";
|
||||
```
|
||||
|
||||
@@ -44,13 +44,13 @@ is legal C, what type of value is `"have"`?
|
||||
|
||||
3. Note that the following expressions yield the same value:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
x[3] *(x+3) *(3+x)
|
||||
```
|
||||
|
||||
since addition is commutative. What can be said about this value?
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
3[x]
|
||||
```
|
||||
|
||||
|
||||
@@ -141,9 +141,9 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./korn</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./korn</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>The Judges believe that this is the best one line entry ever received.
|
||||
Compile on a UNIX system, or at least one using a C implementation that
|
||||
@@ -158,17 +158,17 @@ section right now and see if you are one of the few people who can.</p>
|
||||
<li><p>What is the value of the symbol <code>"have"</code>? (hint: the value is NOT 4
|
||||
characters, or <code>'h'</code>, or a string) Consider the fact that:</p></li>
|
||||
</ol>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="dt">char</span> <span class="op">*</span>x<span class="op">;</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> char *x;</code></pre>
|
||||
<p>defines a pointer to a <code>char</code> (i.e. an address), and that the <code>=</code> assigns
|
||||
things of compatible types. Since:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> x <span class="op">=</span> <span class="st">"have"</span><span class="op">;</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> x = "have";</code></pre>
|
||||
<p>is legal C, what type of value is <code>"have"</code>?</p>
|
||||
<ol start="3" type="1">
|
||||
<li>Note that the following expressions yield the same value:</li>
|
||||
</ol>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> x<span class="op">[</span><span class="dv">3</span><span class="op">]</span> <span class="op">*(</span>x<span class="op">+</span><span class="dv">3</span><span class="op">)</span> <span class="op">*(</span><span class="dv">3</span><span class="op">+</span>x<span class="op">)</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> x[3] *(x+3) *(3+x)</code></pre>
|
||||
<p>since addition is commutative. What can be said about this value?</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="dv">3</span><span class="op">[</span>x<span class="op">]</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> 3[x]</code></pre>
|
||||
<p><a href="https://news.slashdot.org/story/01/02/06/2030205/david-korn-tells-all">David
|
||||
Korn</a>’s
|
||||
<a href="https://en.wikipedia.org/wiki/KornShell">/bin/ksh</a> provides us with a greatly
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./lievaart
|
||||
# enter a level and start playing as described below
|
||||
```
|
||||
@@ -17,7 +17,7 @@
|
||||
|
||||
To see what it would have looked like without the size restrictions:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./lievaart2
|
||||
# enter a level and start playing as described below
|
||||
```
|
||||
|
||||
@@ -141,14 +141,14 @@ Location: <a href="../../location.html#NL">NL</a> - <em>Kingdom of the Netherlan
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./lievaart</span></span>
|
||||
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="co"># enter a level and start playing as described below</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./lievaart
|
||||
# enter a level and start playing as described below</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<p>To see what it would have looked like without the size restrictions:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./lievaart2</span></span>
|
||||
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a> <span class="co"># enter a level and start playing as described below</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./lievaart2
|
||||
# enter a level and start playing as described below</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>We believe that you too will be amazed at just how much power Mr. Lievaart
|
||||
packed into 1024 bytes!</p>
|
||||
|
||||
+4
-4
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./wall
|
||||
# enter some numbers
|
||||
|
||||
@@ -18,14 +18,14 @@
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
You may of course run the commands manually and enter text as you wish. For
|
||||
instance you might try one or both of:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./wall | bc
|
||||
|
||||
./wall | cat
|
||||
|
||||
+10
-10
@@ -141,20 +141,20 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./wall</span></span>
|
||||
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="co"># enter some numbers</span></span>
|
||||
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">./wall</span> <span class="kw">|</span> <span class="ex">some_command</span></span>
|
||||
<span id="cb2-5"><a href="#cb2-5" aria-hidden="true" tabindex="-1"></a> <span class="co"># enter some strings or numbers, depending on command</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./wall
|
||||
# enter some numbers
|
||||
|
||||
./wall | some_command
|
||||
# enter some strings or numbers, depending on command</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<p>You may of course run the commands manually and enter text as you wish. For
|
||||
instance you might try one or both of:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./wall</span> <span class="kw">|</span> <span class="fu">bc</span></span>
|
||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./wall</span> <span class="kw">|</span> <span class="fu">cat</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./wall | bc
|
||||
|
||||
./wall | cat</code></pre>
|
||||
<p>and enter some input like:</p>
|
||||
<pre><code> x*x
|
||||
2^x
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./westley
|
||||
```
|
||||
|
||||
|
||||
@@ -141,9 +141,9 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./westley</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./westley</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p><code>putchar()</code> must exist in the C library and not just as a macro.
|
||||
If it fails to compile, bug your OS/compiler vendor.</p>
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -12,7 +12,7 @@ program. See the [Alternate code](#alternate-code) section below for details.
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./applin
|
||||
```
|
||||
|
||||
@@ -25,7 +25,7 @@ with this entry.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
|
||||
@@ -141,18 +141,18 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>A smaller version, originally called <code>zsmall.c</code> (and still exists as such, as
|
||||
the source of the alt code), of <a href="applin.c">applin.c</a>, can be found in
|
||||
<a href="applin.alt.c">applin.alt.c</a>. Your machine may have an easier time with this
|
||||
program. See the <a href="#alternate-code">Alternate code</a> section below for details.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./applin</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./applin</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>As noted above a smaller version can be used in case your <code>cpp</code> has a hard time
|
||||
with this entry.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<p>Use <code>applin.alt</code> as you would <code>applin</code> above.</p>
|
||||
<h4 id="history-about-the-smaller-version">History about the smaller version:</h4>
|
||||
<p>Way back in 1988 ..</p>
|
||||
|
||||
+3
-3
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -18,13 +18,13 @@ For more detailed information see [1988 dale bugs](../../bugs.html#1988_dale).
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
Observe that three of the commands in the script are:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./dale these files are in this directory: *
|
||||
./dale $(printf "the following files exist in this directory:\n%s\n" *)
|
||||
./dale "$(printf "the following files exist in this directory:\n%s\n" *)"
|
||||
|
||||
@@ -141,17 +141,17 @@ Location: <a href="../../location.html#AU">AU</a> - <em>Commonwealth of Australi
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
|
||||
<p>The current status of this entry is:</p>
|
||||
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
|
||||
<p>For more detailed information see <a href="../../bugs.html#1988_dale">1988 dale bugs</a>.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<p>Observe that three of the commands in the script are:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./dale</span> these files are in this directory: <span class="pp">*</span></span>
|
||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./dale</span> <span class="va">$(</span><span class="bu">printf</span> <span class="st">"the following files exist in this directory:\n%s\n"</span> <span class="pp">*</span><span class="va">)</span></span>
|
||||
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./dale</span> <span class="st">"</span><span class="va">$(</span><span class="bu">printf</span> <span class="st">"the following files exist in this directory:\n%s\n"</span> <span class="pp">*</span><span class="va">)</span><span class="st">"</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./dale these files are in this directory: *
|
||||
./dale $(printf "the following files exist in this directory:\n%s\n" *)
|
||||
./dale "$(printf "the following files exist in this directory:\n%s\n" *)"</code></pre>
|
||||
<p>As the script asks what do the last two do and why do they do it? Why do they
|
||||
differ in format from the first command? Finally how can you get the more likely
|
||||
desired behaviour?</p>
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -11,7 +11,7 @@ code](#alternate-code) below.
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./isaak
|
||||
```
|
||||
|
||||
@@ -21,7 +21,7 @@ code](#alternate-code) below.
|
||||
The original version of this code is in [isaak.alt.c](isaak.alt.c).
|
||||
The original entry starts with the line:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
main(){};
|
||||
```
|
||||
|
||||
@@ -37,7 +37,7 @@ compile.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
@@ -64,7 +64,7 @@ due to the fact that BSD style systems have an `sprintf(3)` that returns a `char
|
||||
*`. Due to the above problems, we placed the output of this program in the
|
||||
file: isaak.encode. To read this file do.
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
uudecode < isaak.encode
|
||||
cat isaak.output
|
||||
```
|
||||
|
||||
@@ -141,16 +141,16 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>There is an alternate version, the original, that can’t be compiled in modern
|
||||
systems but can be if you have an old enough compiler. See <a href="#alternate-code">Alternate
|
||||
code</a> below.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./isaak</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./isaak</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>The original version of this code is in <a href="isaak.alt.c">isaak.alt.c</a>.
|
||||
The original entry starts with the line:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> main<span class="op">(){};</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> main(){};</code></pre>
|
||||
<p>This works on some systems. Why? Note that <code>#include <stdio.h></code> is given on
|
||||
the last line. Why is this needed? Note the unusual calls to <code>sprintf(3)</code>.</p>
|
||||
<p>This version also relied on being able to define <code>#define</code> to something else and
|
||||
@@ -158,7 +158,7 @@ using that macro for <code>#define</code>.</p>
|
||||
<p>This version will not likely work on modern systems if you can even get it to
|
||||
compile.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<p>Use <code>isaak.alt</code> as you would <code>isaak</code> above.</p>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>The program relies heavily on ASCII. Don’t even think of running it on
|
||||
@@ -173,8 +173,8 @@ from a single macro (e.g., <code>"O/**/O"</code> creates either <code>++</code>
|
||||
<p>NOTE: Most System V machines were not be able to execute this program correctly
|
||||
due to the fact that BSD style systems have an <code>sprintf(3)</code> that returns a <code>char *</code>. Due to the above problems, we placed the output of this program in the
|
||||
file: isaak.encode. To read this file do.</p>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">uudecode</span> <span class="op"><</span> isaak.encode</span>
|
||||
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a> <span class="fu">cat</span> isaak.output</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> uudecode < isaak.encode
|
||||
cat isaak.output</code></pre>
|
||||
<p>Since this was fixed, this file is not strictly necessary. See the
|
||||
<a href="isaak.alt.c">isaak.alt.c</a> for the original source.</p>
|
||||
<p>FYI: We are likely to be more strict about portability in the future.</p>
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./litmaath some text
|
||||
```
|
||||
|
||||
@@ -17,7 +17,7 @@ code](#alternate-code) section below.
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./litmaath eschew obfuscation
|
||||
```
|
||||
|
||||
@@ -31,7 +31,7 @@ a file.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
@@ -40,7 +40,7 @@ Use `litmaath.alt` as you would `litmaath` above.
|
||||
|
||||
### Alternate try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./litmaath.alt six was afraid of seven because seven eight nine
|
||||
```
|
||||
|
||||
@@ -50,7 +50,7 @@ Use `litmaath.alt` as you would `litmaath` above.
|
||||
Note the unusual structure:
|
||||
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
while (<condition>)
|
||||
;
|
||||
```
|
||||
@@ -66,7 +66,7 @@ could make the body of the `while` loop an `fprintf` with interesting
|
||||
variables like:
|
||||
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
fprintf(stderr,
|
||||
"argv=%lo *argv=%lo **argv=%c argv[1]=%lo *argv[1]=%c argc=%d\n",
|
||||
(long) argv, (long) *argv, *argv && **argv ? **argv : '@',
|
||||
|
||||
+11
-11
@@ -141,26 +141,26 @@ Location: <a href="../../location.html#CH">CH</a> - <em>Swiss Confederation</em>
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./litmaath</span> some text</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./litmaath some text</code></pre>
|
||||
<p>There is an alternate version provided. See the <a href="#alternate-code">Alternate
|
||||
code</a> section below.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./litmaath</span> eschew obfuscation</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./litmaath eschew obfuscation</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>This alternate code, added to help understand the entry and for fun, is code
|
||||
that we suggested at the time of the entry publication but which we never put in
|
||||
a file.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<p>Use <code>litmaath.alt</code> as you would <code>litmaath</code> above.</p>
|
||||
<h3 id="alternate-try">Alternate try:</h3>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./litmaath.alt</span> six was afraid of seven because seven eight nine</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./litmaath.alt six was afraid of seven because seven eight nine</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Note the unusual structure:</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="cf">while</span> <span class="op">(<</span>condition<span class="op">>)</span></span>
|
||||
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a> <span class="op">;</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> while (<condition>)
|
||||
;</code></pre>
|
||||
<p>Did you notice that the body is empty?</p>
|
||||
<p>Furthermore, it’s interesting to note that only two variables are
|
||||
used to achieve everything.</p>
|
||||
@@ -168,10 +168,10 @@ used to achieve everything.</p>
|
||||
two small strings as arguments, and follow the program closely. One
|
||||
could make the body of the <code>while</code> loop an <code>fprintf</code> with interesting
|
||||
variables like:</p>
|
||||
<div class="sourceCode" id="cb7"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> fprintf<span class="op">(</span>stderr<span class="op">,</span></span>
|
||||
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a> <span class="st">"argv=</span><span class="sc">%lo</span><span class="st"> *argv=</span><span class="sc">%lo</span><span class="st"> **argv=</span><span class="sc">%c</span><span class="st"> argv[1]=</span><span class="sc">%lo</span><span class="st"> *argv[1]=</span><span class="sc">%c</span><span class="st"> argc=</span><span class="sc">%d\n</span><span class="st">"</span><span class="op">,</span></span>
|
||||
<span id="cb7-3"><a href="#cb7-3" aria-hidden="true" tabindex="-1"></a> <span class="op">(</span><span class="dt">long</span><span class="op">)</span> argv<span class="op">,</span> <span class="op">(</span><span class="dt">long</span><span class="op">)</span> <span class="op">*</span>argv<span class="op">,</span> <span class="op">*</span>argv <span class="op">&&</span> <span class="op">**</span>argv <span class="op">?</span> <span class="op">**</span>argv <span class="op">:</span> <span class="ch">'@'</span><span class="op">,</span></span>
|
||||
<span id="cb7-4"><a href="#cb7-4" aria-hidden="true" tabindex="-1"></a> <span class="op">(</span><span class="dt">long</span><span class="op">)</span> argv<span class="op">[</span><span class="dv">1</span><span class="op">],</span> argv<span class="op">[</span><span class="dv">1</span><span class="op">]</span> <span class="op">&&</span> <span class="op">*</span>argv<span class="op">[</span><span class="dv">1</span><span class="op">]</span> <span class="op">?</span> <span class="op">*</span>argv<span class="op">[</span><span class="dv">1</span><span class="op">]</span> <span class="op">:</span> <span class="ch">'@'</span><span class="op">,</span> argc<span class="op">);</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> fprintf(stderr,
|
||||
"argv=%lo *argv=%lo **argv=%c argv[1]=%lo *argv[1]=%c argc=%d\n",
|
||||
(long) argv, (long) *argv, *argv && **argv ? **argv : '@',
|
||||
(long) argv[1], argv[1] && *argv[1] ? *argv[1] : '@', argc);</code></pre>
|
||||
<p>… which is what the <a href="#alternate-code">alternate code</a> is.</p>
|
||||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||||
<p>No remarks were provided by the author.</p>
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
@@ -141,7 +141,7 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Compile and run without parameters.</p>
|
||||
<p>The program is smaller than even the ‘compressed’ form of its output,
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./reddy
|
||||
char *(*(fun[16])();
|
||||
char *(*(*(*(*(*fun[32])))))();
|
||||
@@ -15,7 +15,7 @@
|
||||
|
||||
What happens if you input, and what you do about it?
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
char *(*(*(*(*(*fun[32])))))());
|
||||
```
|
||||
|
||||
|
||||
@@ -141,13 +141,13 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./reddy</span></span>
|
||||
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">char</span> <span class="pp">*(*(</span>fun<span class="pp">[</span><span class="ss">16</span><span class="pp">])</span>(<span class="pp">)</span><span class="kw">;</span></span>
|
||||
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">char</span> <span class="pp">*(*(*(*(*(*</span>fun<span class="pp">[</span><span class="ss">32</span><span class="pp">])))))</span><span class="er">(</span><span class="kw">);</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./reddy
|
||||
char *(*(fun[16])();
|
||||
char *(*(*(*(*(*fun[32])))))();</code></pre>
|
||||
<p>What happens if you input, and what you do about it?</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="dt">char</span> <span class="op">*(*(*(*(*(*</span>fun<span class="op">[</span><span class="dv">32</span><span class="op">])))))());</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> char *(*(*(*(*(*fun[32])))))());</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>This is a somewhat restricted version of a useful program that has been
|
||||
posted to Usenet. What is unusual is what it is able to do so much
|
||||
|
||||
@@ -1,20 +1,20 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./robison 80 10
|
||||
./robison 40 16
|
||||
```
|
||||
|
||||
The first and second parameters are optional. You might also try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./robison 80 2 # <--- can you find the bug?
|
||||
./robison 80 -246
|
||||
```
|
||||
@@ -24,7 +24,7 @@ The first and second parameters are optional. You might also try:
|
||||
|
||||
The following might make an interesting benchmark:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./robison 100
|
||||
```
|
||||
|
||||
|
||||
@@ -141,16 +141,16 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./robison</span> 80 10</span>
|
||||
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./robison</span> 40 16</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./robison 80 10
|
||||
./robison 40 16</code></pre>
|
||||
<p>The first and second parameters are optional. You might also try:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./robison</span> 80 2 <span class="co"># <--- can you find the bug?</span></span>
|
||||
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">./robison</span> 80 <span class="at">-246</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./robison 80 2 # <--- can you find the bug?
|
||||
./robison 80 -246</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>The following might make an interesting benchmark:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./robison</span> 100</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./robison 100</code></pre>
|
||||
<p>[Amdahl 5890-300E with System V cc: 8.40 seconds]</p>
|
||||
<p>We suggest that you C pre-process and perhaps C-beautify this program.
|
||||
All is not what it may appear to be in this program. Why does a <code>whi1e</code>
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make clobber all
|
||||
```
|
||||
|
||||
@@ -12,7 +12,7 @@ code](#alternate-code) section below.
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./spinellis
|
||||
```
|
||||
|
||||
@@ -21,7 +21,7 @@ EOF (typically ctrl-d).
|
||||
|
||||
Now run again:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./spinellis
|
||||
```
|
||||
|
||||
@@ -33,7 +33,7 @@ For clang or compilers that won't read from `/dev/tty`, we provide this version.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make clobber alt
|
||||
```
|
||||
|
||||
@@ -42,7 +42,7 @@ and follow the instructions.
|
||||
|
||||
### Alternate use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./spinellis.alt
|
||||
```
|
||||
|
||||
@@ -51,7 +51,7 @@ EOF (typically ctrl-d).
|
||||
|
||||
Now run again:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./spinellis.alt
|
||||
```
|
||||
|
||||
|
||||
@@ -141,27 +141,27 @@ Location: <a href="../../location.html#GR">GR</a> - <em>Hellenic Republic</em> (
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> clobber all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make clobber all</code></pre>
|
||||
<p>and follow the instructions this will give you.</p>
|
||||
<p>If your compiler will not read from <code>/dev/tty</code> see the <a href="#alternate-code">Alternate
|
||||
code</a> section below.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./spinellis</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./spinellis</code></pre>
|
||||
<p>Type in or copy paste some C code, perhaps from <a href="input.txt">input.txt</a>, and send
|
||||
EOF (typically ctrl-d).</p>
|
||||
<p>Now run again:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./spinellis</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./spinellis</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>For clang or compilers that won’t read from <code>/dev/tty</code>, we provide this version.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> clobber alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make clobber alt</code></pre>
|
||||
<p>and follow the instructions.</p>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./spinellis.alt</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./spinellis.alt</code></pre>
|
||||
<p>Type in or copy paste some C code, perhaps from <a href="input.txt">input.txt</a>, and send
|
||||
EOF (typically ctrl-d).</p>
|
||||
<p>Now run again:</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./spinellis.alt</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./spinellis.alt</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>We enjoyed this entry this year; however in the future programs must be able to
|
||||
be compiled from within a Makefile without the need of human intervention.</p>
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -11,13 +11,13 @@ might wish to do so.
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./westley
|
||||
```
|
||||
|
||||
Also try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
@@ -31,7 +31,7 @@ This version is the original which might not work as you expect nowadays.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
@@ -41,7 +41,7 @@ This version is the original which might not work as you expect nowadays.
|
||||
To see if your compiler has the problem described in the Judges' remarks below,
|
||||
try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./westley.alt
|
||||
```
|
||||
|
||||
@@ -52,7 +52,7 @@ Does it show the same output as `westley`?
|
||||
|
||||
Your compiler must parse
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
#define _ -a
|
||||
-_
|
||||
```
|
||||
@@ -62,7 +62,7 @@ conforming ANSI C Preprocessors may object to this: for such
|
||||
compilers, you can elide the non-standard token-pasting requirement
|
||||
by changing the #define line to:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
#define _ F-->00||F-OO--;
|
||||
```
|
||||
|
||||
@@ -71,7 +71,7 @@ code is the original.
|
||||
|
||||
You might enjoy looking at the output of:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
cc -E westley.alt.c
|
||||
```
|
||||
|
||||
|
||||
@@ -141,37 +141,37 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>NOTE: this version is a fixed version for modern C compilers. See the <a href="#alternate-code">Alternate
|
||||
code</a> section below for how to use the original and why one
|
||||
might wish to do so.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./westley</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./westley</code></pre>
|
||||
<p>Also try:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<p>to show the code with followed by the result so you can truly see the magic.</p>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>This version is the original which might not work as you expect nowadays.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<p>To see if your compiler has the problem described in the Judges’ remarks below,
|
||||
try:</p>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./westley.alt</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./westley.alt</code></pre>
|
||||
<p>Does it show the same output as <code>westley</code>?</p>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Your compiler must parse</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="pp">#define _ </span><span class="op">-</span><span class="pp">a</span></span>
|
||||
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a> <span class="op">-</span>_</span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> #define _ -a
|
||||
-_</code></pre>
|
||||
<p>as <code>--a</code> and not <code>-(-a)</code> or some other tokenized form. Some strictly
|
||||
conforming ANSI C Preprocessors may object to this: for such
|
||||
compilers, you can elide the non-standard token-pasting requirement
|
||||
by changing the #define line to:</p>
|
||||
<div class="sourceCode" id="cb7"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="pp">#define _ F</span><span class="op">--></span><span class="bn">00</span><span class="op">||</span><span class="pp">F</span><span class="op">-</span><span class="pp">OO</span><span class="op">--;</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> #define _ F-->00||F-OO--;</code></pre>
|
||||
<p>This is what the modified code in <a href="westley.c">westley.c</a> does whereas the alt
|
||||
code is the original.</p>
|
||||
<p>You might enjoy looking at the output of:</p>
|
||||
<div class="sourceCode" id="cb8"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> <span class="at">-E</span> westley.alt.c</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> cc -E westley.alt.c</code></pre>
|
||||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||||
<p>No remarks were provided by the author.</p>
|
||||
<!--
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -18,14 +18,14 @@ For more detailed information see [1989 fubar bugs](../../bugs.html#1989_fubar).
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./fubar <number>
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh # run on 1 - 7
|
||||
|
||||
./fubar.sh 2 # run via script
|
||||
|
||||
@@ -141,18 +141,18 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
|
||||
<p>The current status of this entry is:</p>
|
||||
<pre><code> STATUS: known bug - please help us fix</code></pre>
|
||||
<p>For more detailed information see <a href="../../bugs.html#1989_fubar">1989 fubar bugs</a>.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./fubar</span> <span class="op"><</span>number<span class="op">></span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./fubar <number></code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span> <span class="co"># run on 1 - 7</span></span>
|
||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./fubar.sh</span> 2 <span class="co"># run via script</span></span>
|
||||
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">./fubar</span> 2 <span class="co"># run directly</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh # run on 1 - 7
|
||||
|
||||
./fubar.sh 2 # run via script
|
||||
./fubar 2 # run directly</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Run this with a single digit argument (or wait a long time and risk an infinite
|
||||
loop as described in the <a href="../../bugs.html#1989_fubar">1989 fubar bugs</a> file).</p>
|
||||
|
||||
@@ -2,7 +2,7 @@
|
||||
|
||||
NOTE: this will run the program itself.
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make clobber all
|
||||
```
|
||||
|
||||
@@ -12,7 +12,7 @@ See the [Alternate code](#alternate-code) section below for more details.
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./jar.1
|
||||
```
|
||||
|
||||
@@ -26,14 +26,14 @@ This alternate code, which prints something slightly different, is provided as w
|
||||
|
||||
NOTE: this will run the program itself.
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make clobber alt
|
||||
```
|
||||
|
||||
|
||||
### Alternate use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./jar.1.alt
|
||||
```
|
||||
|
||||
@@ -43,7 +43,7 @@ NOTE: this will run the program itself.
|
||||
On many systems the compiler will not allow you to send the object file to
|
||||
`/dev/tty`. The author suggested:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
cc -c -o /dev/tty jar.1.c
|
||||
```
|
||||
|
||||
|
||||
@@ -142,22 +142,22 @@ Location: <a href="../../location.html#SE">SE</a> - <em>Kingdom of Sweden</em> (
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<p>NOTE: this will run the program itself.</p>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> clobber all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make clobber all</code></pre>
|
||||
<p>There is an alternate version with a slight difference that you may wish to try.
|
||||
See the <a href="#alternate-code">Alternate code</a> section below for more details.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./jar.1</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./jar.1</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>This alternate code, which prints something slightly different, is provided as well.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<p>NOTE: this will run the program itself.</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> clobber alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make clobber alt</code></pre>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./jar.1.alt</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./jar.1.alt</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>On many systems the compiler will not allow you to send the object file to
|
||||
<code>/dev/tty</code>. The author suggested:</p>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> <span class="at">-c</span> <span class="at">-o</span> /dev/tty jar.1.c</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> cc -c -o /dev/tty jar.1.c</code></pre>
|
||||
<p>As a last resort the <code>jar.1.sh</code> script provided simulates
|
||||
writing the raw binary of the .o file to the terminal.</p>
|
||||
<p>Abuse of the rules winning entry usually result in a change of the rules.
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./jar.2
|
||||
[enter some lisp]
|
||||
|
||||
@@ -19,7 +19,7 @@ NOTE: this entry will likely segfault on invalid input.
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
|
||||
./try.sh chocolate_cake.lisp
|
||||
@@ -65,7 +65,7 @@ lisp expressions (followed by CR), the program evaluates them and
|
||||
prints out the return values. End execution by typing an end-of-file
|
||||
character.
|
||||
|
||||
```lisp
|
||||
```<!---lisp-->
|
||||
(+ 2.5 3.1)
|
||||
(defun fib (n)
|
||||
(if (< n 2)
|
||||
|
||||
+28
-28
@@ -147,19 +147,19 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./jar.2</span></span>
|
||||
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">[enter</span> some lisp]</span>
|
||||
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">./jar.2</span> <span class="op"><</span> some_lisp_file</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./jar.2
|
||||
[enter some lisp]
|
||||
|
||||
./jar.2 < some_lisp_file</code></pre>
|
||||
<p>NOTE: this entry will likely segfault on invalid input.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span>
|
||||
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span> chocolate_cake.lisp</span>
|
||||
<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb3-5"><a href="#cb3-5" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span> try.txt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh
|
||||
|
||||
./try.sh chocolate_cake.lisp
|
||||
|
||||
./try.sh try.txt</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>This is the most useful program submitted this year. It is a
|
||||
rather large subset of lisp. It has no error recovery, and
|
||||
@@ -192,24 +192,24 @@ The program implements a conventional lisp listener, i.e. you type in
|
||||
lisp expressions (followed by CR), the program evaluates them and
|
||||
prints out the return values. End execution by typing an end-of-file
|
||||
character.</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode lisp"><code class="sourceCode commonlisp"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> (<span class="op">+</span> <span class="fl">2.5</span> <span class="fl">3.1</span>)</span>
|
||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a> (<span class="kw">defun</span><span class="fu"> fib </span>(n)</span>
|
||||
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a> (<span class="kw">if</span> (<span class="op"><</span> n <span class="dv">2</span>)</span>
|
||||
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a> <span class="dv">1</span></span>
|
||||
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a> (<span class="op">+</span> (fib (<span class="op">-</span> n <span class="dv">2</span>)) (fib (<span class="op">-</span> n <span class="dv">1</span>)))))</span>
|
||||
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a> (fib <span class="dv">10</span>)</span>
|
||||
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a> (<span class="kw">defun</span><span class="fu"> </span>! (x) (<span class="kw">if</span> (<span class="kw">equal</span> x <span class="dv">0</span>) <span class="dv">1</span> (<span class="op">*</span> x (! (<span class="op">-</span> x <span class="dv">1</span>)))))</span>
|
||||
<span id="cb4-8"><a href="#cb4-8" aria-hidden="true" tabindex="-1"></a> (! <span class="dv">7</span>)</span>
|
||||
<span id="cb4-9"><a href="#cb4-9" aria-hidden="true" tabindex="-1"></a> (<span class="kw">defun</span><span class="fu"> fn1 </span>(fn) (<span class="op">+</span> (fn <span class="dv">1</span> <span class="dv">2</span>) (fn <span class="dv">3</span> <span class="dv">4</span>)))</span>
|
||||
<span id="cb4-10"><a href="#cb4-10" aria-hidden="true" tabindex="-1"></a> (<span class="kw">defun</span><span class="fu"> fn2 </span>(a b) (<span class="op">+</span> a b))</span>
|
||||
<span id="cb4-11"><a href="#cb4-11" aria-hidden="true" tabindex="-1"></a> (fn1 (<span class="kw">function</span> <span class="op">+</span>))</span>
|
||||
<span id="cb4-12"><a href="#cb4-12" aria-hidden="true" tabindex="-1"></a> (fn1 (<span class="kw">function</span> fn2))</span>
|
||||
<span id="cb4-13"><a href="#cb4-13" aria-hidden="true" tabindex="-1"></a> (fn1 (<span class="kw">function</span> (<span class="kw">lambda</span> (z1 z2) (<span class="op">+</span> z1 z2))))</span>
|
||||
<span id="cb4-14"><a href="#cb4-14" aria-hidden="true" tabindex="-1"></a> (<span class="kw">quote</span> a)</span>
|
||||
<span id="cb4-15"><a href="#cb4-15" aria-hidden="true" tabindex="-1"></a> (<span class="kw">cons</span> (<span class="kw">quote</span> (a b)) (<span class="kw">quote</span> (c d e)))</span>
|
||||
<span id="cb4-16"><a href="#cb4-16" aria-hidden="true" tabindex="-1"></a> (<span class="kw">cons</span> (<span class="kw">quote</span> (f)) ())</span>
|
||||
<span id="cb4-17"><a href="#cb4-17" aria-hidden="true" tabindex="-1"></a> (<span class="kw">car</span> (<span class="kw">quote</span> (a b c)))</span>
|
||||
<span id="cb4-18"><a href="#cb4-18" aria-hidden="true" tabindex="-1"></a> (<span class="kw">cdr</span> (<span class="kw">cdr</span> (<span class="kw">quote</span> (g h i))))</span></code></pre></div>
|
||||
<pre class="<!---lisp-->"><code> (+ 2.5 3.1)
|
||||
(defun fib (n)
|
||||
(if (< n 2)
|
||||
1
|
||||
(+ (fib (- n 2)) (fib (- n 1)))))
|
||||
(fib 10)
|
||||
(defun ! (x) (if (equal x 0) 1 (* x (! (- x 1)))))
|
||||
(! 7)
|
||||
(defun fn1 (fn) (+ (fn 1 2) (fn 3 4)))
|
||||
(defun fn2 (a b) (+ a b))
|
||||
(fn1 (function +))
|
||||
(fn1 (function fn2))
|
||||
(fn1 (function (lambda (z1 z2) (+ z1 z2))))
|
||||
(quote a)
|
||||
(cons (quote (a b)) (quote (c d e)))
|
||||
(cons (quote (f)) ())
|
||||
(car (quote (a b c)))
|
||||
(cdr (cdr (quote (g h i))))</code></pre>
|
||||
<p>Please do not leave any whitespace before the first parenthesis when
|
||||
you type your input, or any other unnecessary whitespace. Please try to
|
||||
avoid any undefined variables or functions, wrong number of arguments
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -11,7 +11,7 @@ To get this to compile with a modern CPP, we had to replace `#D` with `#define`.
|
||||
|
||||
Run the program this way:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./ovdluhe < textfile
|
||||
```
|
||||
|
||||
@@ -21,7 +21,7 @@ by chance or is killed.
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh ; sleep 2 ; ./try.sh
|
||||
```
|
||||
|
||||
@@ -34,7 +34,7 @@ it's a `#define` it's easy to set up.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make P=9 clobber alt
|
||||
```
|
||||
|
||||
@@ -46,14 +46,14 @@ program to fail and a negative value will cause a compilation error.
|
||||
|
||||
### Alternate use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./ovdluhe.alt
|
||||
```
|
||||
|
||||
|
||||
### Alternate try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.alt.sh
|
||||
|
||||
P=5 ./try.alt.sh
|
||||
|
||||
@@ -141,30 +141,30 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>To get this to compile with a modern CPP, we had to replace <code>#D</code> with <code>#define</code>.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<p>Run the program this way:</p>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./ovdluhe</span> <span class="op"><</span> textfile</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./ovdluhe < textfile</code></pre>
|
||||
<p>The program stops when it reaches the end of the template buffer
|
||||
by chance or is killed.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span> <span class="kw">;</span> <span class="fu">sleep</span> 2 <span class="kw">;</span> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh ; sleep 2 ; ./try.sh</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>The author suggested that one varies the definition of <code>P</code> from 2 through 10. As
|
||||
it’s a <code>#define</code> it’s easy to set up.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> P=9 clobber alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make P=9 clobber alt</code></pre>
|
||||
<p>You do not have to define <code>P</code> but if you do you can replace the value with
|
||||
whatever you wish, as long as it’s a positive <code>int</code> (or evaluates to a positive
|
||||
<code>int</code> like the default <code>(A<<AP)</code> does). Too high a value will likely cause the
|
||||
program to fail and a negative value will cause a compilation error.</p>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./ovdluhe.alt</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./ovdluhe.alt</code></pre>
|
||||
<h3 id="alternate-try">Alternate try:</h3>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.alt.sh</span></span>
|
||||
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a> <span class="va">P</span><span class="op">=</span>5 <span class="ex">./try.alt.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.alt.sh
|
||||
|
||||
P=5 ./try.alt.sh</code></pre>
|
||||
<p>NOTE: if you specify too high a value for <code>P</code> the program might fail. If you
|
||||
specify a value < 0 it will fail to compile.</p>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
|
||||
+4
-4
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -10,7 +10,7 @@ out. See [alternate code](#alternate-code) below for more details.
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./paul
|
||||
```
|
||||
|
||||
@@ -28,14 +28,14 @@ could easily be added.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
|
||||
### Alternate use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./paul.alt
|
||||
```
|
||||
|
||||
|
||||
@@ -141,11 +141,11 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>There is an alternate version with a trace routine that the author had commented
|
||||
out. See <a href="#alternate-code">alternate code</a> below for more details.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./paul</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./paul</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>This version was described by the author like:</p>
|
||||
<blockquote>
|
||||
@@ -156,9 +156,9 @@ and forth as the program runs. A much better debugger or trace
|
||||
could easily be added.</p>
|
||||
</blockquote>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./paul.alt</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./paul.alt</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>The author’s comments is a detailed program explanation and spoiler. If you
|
||||
want a real challenge, don’t read any further and try to understand the program
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -18,7 +18,7 @@ For more detailed information see [1989 robison bugs](../../bugs.html#1989_robis
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./robison
|
||||
# enter valid expressions
|
||||
```
|
||||
@@ -26,7 +26,7 @@ For more detailed information see [1989 robison bugs](../../bugs.html#1989_robis
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./robison
|
||||
11x10
|
||||
# enter other expressions
|
||||
|
||||
+10
-10
@@ -141,22 +141,22 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
|
||||
<p>The current status of this entry is:</p>
|
||||
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
|
||||
<p>For more detailed information see <a href="../../bugs.html#1989_robison">1989 robison bugs</a>.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./robison</span></span>
|
||||
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a> <span class="co"># enter valid expressions</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./robison
|
||||
# enter valid expressions</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./robison</span></span>
|
||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a> <span class="ex">11x10</span></span>
|
||||
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a> <span class="co"># enter other expressions</span></span>
|
||||
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span>
|
||||
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> 100 / 100 <span class="kw">|</span> <span class="ex">./robison</span> <span class="co"># <-- what happens here ?</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./robison
|
||||
11x10
|
||||
# enter other expressions
|
||||
|
||||
./try.sh
|
||||
|
||||
echo 100 / 100 | ./robison # <-- what happens here ?</code></pre>
|
||||
<p>NOTE: This program will very likely crash or break into tiny bits :-) if you
|
||||
feed it numbers with non-binary digits. This, as you might notice if you try one
|
||||
of the above commands, can happen with other input as well. If you wish to
|
||||
|
||||
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./roemer
|
||||
```
|
||||
|
||||
|
||||
@@ -141,9 +141,9 @@ Location: <a href="../../location.html#NL">NL</a> - <em>Kingdom of the Netherlan
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./roemer</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./roemer</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Do you know what this program does? If you do, look again, there is more here
|
||||
than meets the PI.</p>
|
||||
|
||||
@@ -1,20 +1,20 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./tromp [drops_per_sec [cmd_string]]
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./tromp 5
|
||||
|
||||
./tromp 10 "hkl jq"
|
||||
@@ -53,7 +53,7 @@ the judges' additional remarks in the author's remarks, for more details.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
@@ -138,7 +138,7 @@ at the start and `-raw` at the end. This further reduces the size of
|
||||
the program, but has the possible disadvantage that the program
|
||||
can only by stopped by 'q' or by the `kill -9' command.
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
long h[4];t(){h[3]-=h[3]/3000;setitimer(0,h,0);}c,d,l,v[]={(int)t,0,2},w,s,I,K
|
||||
=0,i=276,j,k,q[276],Q[276],*n=q,*m,x=17,f[]={7,-13,-12,1,8,-11,-12,-1,9,-1,1,
|
||||
12,3,-13,-12,-1,12,-1,11,1,15,-1,13,1,18,-1,1,2,0,-12,-1,11,1,-12,1,13,10,-12,
|
||||
|
||||
+25
-25
@@ -141,13 +141,13 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./tromp</span> [drops_per_sec <span class="pp">[</span><span class="ss">cmd_string</span><span class="pp">]</span>]</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./tromp [drops_per_sec [cmd_string]]</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./tromp</span> 5</span>
|
||||
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">./tromp</span> 10 <span class="st">"hkl jq"</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./tromp 5
|
||||
|
||||
./tromp 10 "hkl jq"</code></pre>
|
||||
<p>The second command, <code>./tromp 10 "hkl jq"</code>, will set up the keys kind of like
|
||||
vim:</p>
|
||||
<ul>
|
||||
@@ -171,7 +171,7 @@ loser</a> :-)</p>
|
||||
<p>The author provided an alternate version of the code with some improvements. See
|
||||
the judges’ additional remarks in the author’s remarks, for more details.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<p>Use <code>tromp.alt</code> as you would <code>tromp</code> above.</p>
|
||||
<p>NOTE: testing more than one user updating the high score file, one of the
|
||||
@@ -231,25 +231,25 @@ temporary file.</p>
|
||||
at the start and <code>-raw</code> at the end. This further reduces the size of
|
||||
the program, but has the possible disadvantage that the program
|
||||
can only by stopped by ‘q’ or by the `kill -9’ command.</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="dt">long</span> h<span class="op">[</span><span class="dv">4</span><span class="op">];</span>t<span class="op">(){</span>h<span class="op">[</span><span class="dv">3</span><span class="op">]-=</span>h<span class="op">[</span><span class="dv">3</span><span class="op">]/</span><span class="dv">3000</span><span class="op">;</span>setitimer<span class="op">(</span><span class="dv">0</span><span class="op">,</span>h<span class="op">,</span><span class="dv">0</span><span class="op">);}</span>c<span class="op">,</span>d<span class="op">,</span>l<span class="op">,</span>v<span class="op">[]={(</span><span class="dt">int</span><span class="op">)</span>t<span class="op">,</span><span class="dv">0</span><span class="op">,</span><span class="dv">2</span><span class="op">},</span>w<span class="op">,</span>s<span class="op">,</span>I<span class="op">,</span>K</span>
|
||||
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a> <span class="op">=</span><span class="dv">0</span><span class="op">,</span>i<span class="op">=</span><span class="dv">276</span><span class="op">,</span>j<span class="op">,</span>k<span class="op">,</span>q<span class="op">[</span><span class="dv">276</span><span class="op">],</span>Q<span class="op">[</span><span class="dv">276</span><span class="op">],*</span>n<span class="op">=</span>q<span class="op">,*</span>m<span class="op">,</span>x<span class="op">=</span><span class="dv">17</span><span class="op">,</span>f<span class="op">[]={</span><span class="dv">7</span><span class="op">,-</span><span class="dv">13</span><span class="op">,-</span><span class="dv">12</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">8</span><span class="op">,-</span><span class="dv">11</span><span class="op">,-</span><span class="dv">12</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">9</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span></span>
|
||||
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a> <span class="dv">12</span><span class="op">,</span><span class="dv">3</span><span class="op">,-</span><span class="dv">13</span><span class="op">,-</span><span class="dv">12</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">12</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">11</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">15</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">13</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">18</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">2</span><span class="op">,</span><span class="dv">0</span><span class="op">,-</span><span class="dv">12</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">11</span><span class="op">,</span><span class="dv">1</span><span class="op">,-</span><span class="dv">12</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">13</span><span class="op">,</span><span class="dv">10</span><span class="op">,-</span><span class="dv">12</span><span class="op">,</span></span>
|
||||
<span id="cb6-4"><a href="#cb6-4" aria-hidden="true" tabindex="-1"></a> <span class="dv">1</span><span class="op">,</span><span class="dv">12</span><span class="op">,</span><span class="dv">11</span><span class="op">,-</span><span class="dv">12</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">2</span><span class="op">,-</span><span class="dv">12</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">12</span><span class="op">,</span><span class="dv">13</span><span class="op">,-</span><span class="dv">12</span><span class="op">,</span><span class="dv">12</span><span class="op">,</span><span class="dv">13</span><span class="op">,</span><span class="dv">14</span><span class="op">,-</span><span class="dv">11</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">1</span><span class="op">,</span><span class="dv">4</span><span class="op">,-</span><span class="dv">13</span><span class="op">,-</span><span class="dv">12</span><span class="op">,</span><span class="dv">12</span><span class="op">,</span><span class="dv">16</span><span class="op">,-</span><span class="dv">11</span><span class="op">,-</span><span class="dv">12</span><span class="op">,</span></span>
|
||||
<span id="cb6-5"><a href="#cb6-5" aria-hidden="true" tabindex="-1"></a> <span class="dv">12</span><span class="op">,</span><span class="dv">17</span><span class="op">,-</span><span class="dv">13</span><span class="op">,</span><span class="dv">1</span><span class="op">,-</span><span class="dv">1</span><span class="op">,</span><span class="dv">5</span><span class="op">,-</span><span class="dv">12</span><span class="op">,</span><span class="dv">12</span><span class="op">,</span><span class="dv">11</span><span class="op">,</span><span class="dv">6</span><span class="op">,-</span><span class="dv">12</span><span class="op">,</span><span class="dv">12</span><span class="op">,</span><span class="dv">24</span><span class="op">};</span>u<span class="op">(){</span><span class="cf">for</span><span class="op">(</span>i<span class="op">=</span><span class="dv">11</span><span class="op">;++</span>i<span class="op"><</span><span class="dv">264</span><span class="op">;)</span><span class="cf">if</span><span class="op">((</span>k<span class="op">=</span>q<span class="op">[</span>i<span class="op">])-</span>Q<span class="op">[</span>i<span class="op">]</span></span>
|
||||
<span id="cb6-6"><a href="#cb6-6" aria-hidden="true" tabindex="-1"></a> <span class="op">){</span>Q<span class="op">[</span>i<span class="op">]=</span>k<span class="op">;</span><span class="cf">if</span><span class="op">(</span>i<span class="op">-++</span>I<span class="op">||</span>i<span class="op">%</span><span class="dv">12</span><span class="op"><</span><span class="dv">1</span><span class="op">)</span>printf<span class="op">(</span><span class="st">"</span><span class="sc">\033</span><span class="st">[</span><span class="sc">%d</span><span class="st">;</span><span class="sc">%d</span><span class="st">H"</span><span class="op">,(</span>I<span class="op">=</span>i<span class="op">)/</span><span class="dv">12</span><span class="op">,</span>i<span class="op">%</span><span class="dv">12</span><span class="op">*</span><span class="dv">2</span><span class="op">+</span><span class="dv">28</span><span class="op">);</span>printf<span class="op">(</span></span>
|
||||
<span id="cb6-7"><a href="#cb6-7" aria-hidden="true" tabindex="-1"></a> <span class="st">"</span><span class="sc">\033</span><span class="st">[</span><span class="sc">%d</span><span class="st">m "</span><span class="op">+(</span>K<span class="op">-</span>k<span class="op">?</span><span class="dv">0</span><span class="op">:</span><span class="dv">5</span><span class="op">),</span>k<span class="op">);</span>K<span class="op">=</span>k<span class="op">;}</span>Q<span class="op">[</span><span class="dv">263</span><span class="op">]=</span>c<span class="op">=</span>getchar<span class="op">();}</span>G<span class="op">(</span>b<span class="op">){</span><span class="cf">for</span><span class="op">(</span>i<span class="op">=</span><span class="dv">4</span><span class="op">;</span>i<span class="op">--;)</span><span class="cf">if</span><span class="op">(</span>q<span class="op">[</span>i<span class="op">?</span>b<span class="op">+</span></span>
|
||||
<span id="cb6-8"><a href="#cb6-8" aria-hidden="true" tabindex="-1"></a> n<span class="op">[</span>i<span class="op">]:</span>b<span class="op">])</span><span class="cf">return</span> <span class="dv">0</span><span class="op">;</span><span class="cf">return</span> <span class="dv">1</span><span class="op">;}</span>g<span class="op">(</span>b<span class="op">){</span><span class="cf">for</span><span class="op">(</span>i<span class="op">=</span><span class="dv">4</span><span class="op">;</span>i<span class="op">--;</span>q<span class="op">[</span>i<span class="op">?</span>x<span class="op">+</span>n<span class="op">[</span>i<span class="op">]:</span>x<span class="op">]=</span>b<span class="op">);}</span>main<span class="op">(</span>C<span class="op">,</span>V<span class="op">,</span>a<span class="op">)</span><span class="dt">char</span><span class="op">*</span></span>
|
||||
<span id="cb6-9"><a href="#cb6-9" aria-hidden="true" tabindex="-1"></a> <span class="op">*</span>V<span class="op">,*</span>a<span class="op">;{</span>h<span class="op">[</span><span class="dv">3</span><span class="op">]=</span><span class="dv">1000000</span><span class="op">/(</span>l<span class="op">=</span>C<span class="op">></span><span class="dv">1</span><span class="op">?</span>atoi<span class="op">(</span>V<span class="op">[</span><span class="dv">1</span><span class="op">]):</span><span class="dv">2</span><span class="op">);</span><span class="cf">for</span><span class="op">(</span>a<span class="op">=</span>C<span class="op">></span><span class="dv">2</span><span class="op">?</span>V<span class="op">[</span><span class="dv">2</span><span class="op">]:</span><span class="st">"jkl pq"</span><span class="op">;</span>i<span class="op">;</span>i<span class="op">--)*</span>n<span class="op">++=</span>i<span class="op"><</span></span>
|
||||
<span id="cb6-10"><a href="#cb6-10" aria-hidden="true" tabindex="-1"></a> <span class="dv">25</span><span class="op">||</span>i<span class="op">%</span><span class="dv">12</span><span class="op"><</span><span class="dv">2</span><span class="op">?</span><span class="dv">7</span><span class="op">:</span><span class="dv">0</span><span class="op">;</span>srand<span class="op">(</span>getpid<span class="op">());</span>system<span class="op">(</span><span class="st">"stty cbreak -echo stop u"</span><span class="op">);</span>sigvec<span class="op">(</span><span class="dv">14</span><span class="op">,</span>v<span class="op">,</span></span>
|
||||
<span id="cb6-11"><a href="#cb6-11" aria-hidden="true" tabindex="-1"></a> <span class="dv">0</span><span class="op">);</span>t<span class="op">();</span>puts<span class="op">(</span><span class="st">"</span><span class="sc">\033</span><span class="st">[H</span><span class="sc">\033</span><span class="st">[J"</span><span class="op">);</span><span class="cf">for</span><span class="op">(</span>n<span class="op">=</span>f<span class="op">+</span>rand<span class="op">()%</span><span class="dv">7</span><span class="op">*</span><span class="dv">4</span><span class="op">;;</span>g<span class="op">(</span><span class="dv">7</span><span class="op">),</span>u<span class="op">(),</span>g<span class="op">(</span><span class="dv">0</span><span class="op">)){</span><span class="cf">if</span><span class="op">(</span>c<span class="op"><</span><span class="dv">0</span><span class="op">){</span><span class="cf">if</span><span class="op">(</span>G<span class="op">(</span>x<span class="op">+</span></span>
|
||||
<span id="cb6-12"><a href="#cb6-12" aria-hidden="true" tabindex="-1"></a> <span class="dv">12</span><span class="op">))</span>x<span class="op">+=</span><span class="dv">12</span><span class="op">;</span><span class="cf">else</span><span class="op">{</span>g<span class="op">(</span><span class="dv">7</span><span class="op">);++</span>w<span class="op">;</span><span class="cf">for</span><span class="op">(</span>j<span class="op">=</span><span class="dv">0</span><span class="op">;</span>j<span class="op"><</span><span class="dv">252</span><span class="op">;</span>j<span class="op">=</span><span class="dv">12</span><span class="op">*(</span>j<span class="op">/</span><span class="dv">12</span><span class="op">+</span><span class="dv">1</span><span class="op">))</span><span class="cf">for</span><span class="op">(;</span>q<span class="op">[++</span>j<span class="op">];)</span><span class="cf">if</span><span class="op">(</span>j<span class="op">%</span><span class="dv">12</span><span class="op">==</span><span class="dv">10</span><span class="op">){</span></span>
|
||||
<span id="cb6-13"><a href="#cb6-13" aria-hidden="true" tabindex="-1"></a> <span class="cf">for</span><span class="op">(;</span>j<span class="op">%</span><span class="dv">12</span><span class="op">;</span>q<span class="op">[</span>j<span class="op">--]=</span><span class="dv">0</span><span class="op">);</span>u<span class="op">();</span><span class="cf">for</span><span class="op">(;--</span>j<span class="op">;</span>q<span class="op">[</span>j<span class="op">+</span><span class="dv">12</span><span class="op">]=</span>q<span class="op">[</span>j<span class="op">]);</span>u<span class="op">();}</span>n<span class="op">=</span>f<span class="op">+</span>rand<span class="op">()%</span><span class="dv">7</span><span class="op">*</span><span class="dv">4</span><span class="op">;</span>G<span class="op">(</span>x<span class="op">=</span><span class="dv">17</span><span class="op">)||(</span>c</span>
|
||||
<span id="cb6-14"><a href="#cb6-14" aria-hidden="true" tabindex="-1"></a> <span class="op">=</span>a<span class="op">[</span><span class="dv">5</span><span class="op">]);}}</span><span class="cf">if</span><span class="op">(</span>c<span class="op">==*</span>a<span class="op">)</span>G<span class="op">(--</span>x<span class="op">)||++</span>x<span class="op">;</span><span class="cf">if</span><span class="op">(</span>c<span class="op">==</span>a<span class="op">[</span><span class="dv">1</span><span class="op">])</span>n<span class="op">=</span>f<span class="op">+</span><span class="dv">4</span><span class="op">**(</span>m<span class="op">=</span>n<span class="op">),</span>G<span class="op">(</span>x<span class="op">)||(</span>n<span class="op">=</span>m<span class="op">);</span><span class="cf">if</span><span class="op">(</span>c<span class="op">==</span>a<span class="op">[</span><span class="dv">2</span><span class="op">])</span>G</span>
|
||||
<span id="cb6-15"><a href="#cb6-15" aria-hidden="true" tabindex="-1"></a> <span class="op">(++</span>x<span class="op">)||--</span>x<span class="op">;</span><span class="cf">if</span><span class="op">(</span>c<span class="op">==</span>a<span class="op">[</span><span class="dv">3</span><span class="op">])</span><span class="cf">for</span><span class="op">(;</span>G<span class="op">(</span>x<span class="op">+</span><span class="dv">12</span><span class="op">);++</span>w<span class="op">)</span>x<span class="op">+=</span><span class="dv">12</span><span class="op">;</span><span class="cf">if</span><span class="op">(</span>c<span class="op">==</span>a<span class="op">[</span><span class="dv">4</span><span class="op">]||</span>c<span class="op">==</span>a<span class="op">[</span><span class="dv">5</span><span class="op">]){</span>s<span class="op">=</span>sigblock<span class="op">(</span></span>
|
||||
<span id="cb6-16"><a href="#cb6-16" aria-hidden="true" tabindex="-1"></a> <span class="dv">8192</span><span class="op">);</span>printf<span class="op">(</span><span class="st">"</span><span class="sc">\033</span><span class="st">[H</span><span class="sc">\033</span><span class="st">[J</span><span class="sc">\033</span><span class="st">[0m</span><span class="sc">%d\n</span><span class="st">"</span><span class="op">,</span>w<span class="op">);</span><span class="cf">if</span><span class="op">(</span>c<span class="op">==</span>a<span class="op">[</span><span class="dv">5</span><span class="op">])</span><span class="cf">break</span><span class="op">;</span><span class="cf">for</span><span class="op">(</span>j<span class="op">=</span><span class="dv">264</span><span class="op">;</span>j<span class="op">--;</span>Q<span class="op">[</span>j<span class="op">]=</span></span>
|
||||
<span id="cb6-17"><a href="#cb6-17" aria-hidden="true" tabindex="-1"></a> <span class="dv">0</span><span class="op">);</span><span class="cf">while</span><span class="op">(</span>getchar<span class="op">()-</span>a<span class="op">[</span><span class="dv">4</span><span class="op">]);</span>puts<span class="op">(</span><span class="st">"</span><span class="sc">\033</span><span class="st">[H</span><span class="sc">\033</span><span class="st">[J</span><span class="sc">\033</span><span class="st">[7m"</span><span class="op">);</span>sigsetmask<span class="op">(</span>s<span class="op">);}}</span>d<span class="op">=</span>popen<span class="op">(</span></span>
|
||||
<span id="cb6-18"><a href="#cb6-18" aria-hidden="true" tabindex="-1"></a> <span class="st">"stty -cbreak echo stop </span><span class="sc">\023</span><span class="st">;sort -mnr -o HI - HI;cat HI"</span><span class="op">,</span><span class="st">"w"</span><span class="op">);</span>fprintf<span class="op">(</span>d<span class="op">,</span></span>
|
||||
<span id="cb6-19"><a href="#cb6-19" aria-hidden="true" tabindex="-1"></a> <span class="st">"</span><span class="sc">%4d</span><span class="st"> from level </span><span class="sc">%1d</span><span class="st"> by </span><span class="sc">%s\n</span><span class="st">"</span><span class="op">,</span>w<span class="op">,</span>l<span class="op">,</span>getlogin<span class="op">());</span>pclose<span class="op">(</span>d<span class="op">);}</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> long h[4];t(){h[3]-=h[3]/3000;setitimer(0,h,0);}c,d,l,v[]={(int)t,0,2},w,s,I,K
|
||||
=0,i=276,j,k,q[276],Q[276],*n=q,*m,x=17,f[]={7,-13,-12,1,8,-11,-12,-1,9,-1,1,
|
||||
12,3,-13,-12,-1,12,-1,11,1,15,-1,13,1,18,-1,1,2,0,-12,-1,11,1,-12,1,13,10,-12,
|
||||
1,12,11,-12,-1,1,2,-12,-1,12,13,-12,12,13,14,-11,-1,1,4,-13,-12,12,16,-11,-12,
|
||||
12,17,-13,1,-1,5,-12,12,11,6,-12,12,24};u(){for(i=11;++i<264;)if((k=q[i])-Q[i]
|
||||
){Q[i]=k;if(i-++I||i%12<1)printf("\033[%d;%dH",(I=i)/12,i%12*2+28);printf(
|
||||
"\033[%dm "+(K-k?0:5),k);K=k;}Q[263]=c=getchar();}G(b){for(i=4;i--;)if(q[i?b+
|
||||
n[i]:b])return 0;return 1;}g(b){for(i=4;i--;q[i?x+n[i]:x]=b);}main(C,V,a)char*
|
||||
*V,*a;{h[3]=1000000/(l=C>1?atoi(V[1]):2);for(a=C>2?V[2]:"jkl pq";i;i--)*n++=i<
|
||||
25||i%12<2?7:0;srand(getpid());system("stty cbreak -echo stop u");sigvec(14,v,
|
||||
0);t();puts("\033[H\033[J");for(n=f+rand()%7*4;;g(7),u(),g(0)){if(c<0){if(G(x+
|
||||
12))x+=12;else{g(7);++w;for(j=0;j<252;j=12*(j/12+1))for(;q[++j];)if(j%12==10){
|
||||
for(;j%12;q[j--]=0);u();for(;--j;q[j+12]=q[j]);u();}n=f+rand()%7*4;G(x=17)||(c
|
||||
=a[5]);}}if(c==*a)G(--x)||++x;if(c==a[1])n=f+4**(m=n),G(x)||(n=m);if(c==a[2])G
|
||||
(++x)||--x;if(c==a[3])for(;G(x+12);++w)x+=12;if(c==a[4]||c==a[5]){s=sigblock(
|
||||
8192);printf("\033[H\033[J\033[0m%d\n",w);if(c==a[5])break;for(j=264;j--;Q[j]=
|
||||
0);while(getchar()-a[4]);puts("\033[H\033[J\033[7m");sigsetmask(s);}}d=popen(
|
||||
"stty -cbreak echo stop \023;sort -mnr -o HI - HI;cat HI","w");fprintf(d,
|
||||
"%4d from level %1d by %s\n",w,l,getlogin());pclose(d);}</code></pre>
|
||||
<p>NOTE: the alternate version was fixed for modern systems in 2023.</p>
|
||||
<!--
|
||||
|
||||
|
||||
+2
-2
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
|
||||
@@ -141,9 +141,9 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>This program computes all proper subsets of the set of
|
||||
arguments passed to it. Each subset is printed with one
|
||||
|
||||
+11
-11
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -20,26 +20,26 @@ For more detailed information see [1989 westley bugs](../../bugs.html#1989_westl
|
||||
|
||||
Try compiling and running the 4 resulting programs like:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./compile.sh
|
||||
```
|
||||
|
||||
If you need to specify an alternate compiler path, say because your default
|
||||
compiler is clang (or in the case of macOS gcc is clang) you can do so like:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
CC=/opt/local/bin/gcc-mp-12 ./compile.sh
|
||||
```
|
||||
|
||||
If you wish to delay the script or remove the delay you can do so like:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
DELAY=2 ./compile.sh
|
||||
```
|
||||
|
||||
Finally try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./westley
|
||||
# input some lines of text, sending EOF (usually ctrl-d) to end
|
||||
|
||||
@@ -70,7 +70,7 @@ different algorithm for each version (hereafter referred to as
|
||||
When compiling these versions, one needs to define `trgpune`
|
||||
in the compile line (which the Makefile now has). Example:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
cc -Dtrgpune=putchar ver3.c -o ver3
|
||||
```
|
||||
|
||||
@@ -109,13 +109,13 @@ function `vs()` to define in the ROT13 version. But a function
|
||||
called `vs()` turns into a function called `if()` in the original,
|
||||
so it can't be done. Therefore, I do:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
expr1 && expr2 && (expr3=etc);
|
||||
```
|
||||
|
||||
which is the same as:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
if (expr1 && expr2) expr3=etc;
|
||||
```
|
||||
|
||||
@@ -124,7 +124,7 @@ expressions if they aren't in an assignment or conditional
|
||||
statement. This might warrant a warning, since other compilers
|
||||
may do this. I found MANY compilers botched:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
expr1 && (expr2,expr3);
|
||||
```
|
||||
|
||||
@@ -146,7 +146,7 @@ such statements to make it more portable.
|
||||
|
||||
Normally (!), a reversible C program is done thus:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
/**/ forward code /*/ edoc drawkcab /**/
|
||||
```
|
||||
|
||||
@@ -154,7 +154,7 @@ If your compiler nests comments, it will get this wrong.
|
||||
However, I have made some bits of the code palindromic,
|
||||
(or different, but reversible) so it is more like:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
/**/forward/*//**/ palindromic /**//*/drawkcab/**/
|
||||
```
|
||||
|
||||
|
||||
+14
-14
@@ -141,24 +141,24 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
|
||||
<p>The current status of this entry is:</p>
|
||||
<pre><code> STATUS: known bug - please help us fix</code></pre>
|
||||
<p>For more detailed information see <a href="../../bugs.html#1989_westley">1989 westley bugs</a>.</p>
|
||||
<h2 id="try">Try:</h2>
|
||||
<p>Try compiling and running the 4 resulting programs like:</p>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./compile.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./compile.sh</code></pre>
|
||||
<p>If you need to specify an alternate compiler path, say because your default
|
||||
compiler is clang (or in the case of macOS gcc is clang) you can do so like:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="va">CC</span><span class="op">=</span>/opt/local/bin/gcc-mp-12 <span class="ex">./compile.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> CC=/opt/local/bin/gcc-mp-12 ./compile.sh</code></pre>
|
||||
<p>If you wish to delay the script or remove the delay you can do so like:</p>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="va">DELAY</span><span class="op">=</span>2 <span class="ex">./compile.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> DELAY=2 ./compile.sh</code></pre>
|
||||
<p>Finally try:</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./westley</span></span>
|
||||
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a> <span class="co"># input some lines of text, sending EOF (usually ctrl-d) to end</span></span>
|
||||
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-4"><a href="#cb6-4" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span> <span class="co"># demo of some input</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./westley
|
||||
# input some lines of text, sending EOF (usually ctrl-d) to end
|
||||
|
||||
./try.sh # demo of some input</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>There is a secret way to get ONE of the versions to print out
|
||||
“<code>Hello, world!\n</code>”. Can you find how to do it?</p>
|
||||
@@ -175,7 +175,7 @@ different algorithm for each version (hereafter referred to as
|
||||
(ROT13 and reversed)).</p>
|
||||
<p>When compiling these versions, one needs to define <code>trgpune</code>
|
||||
in the compile line (which the Makefile now has). Example:</p>
|
||||
<div class="sourceCode" id="cb7"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">cc</span> <span class="at">-Dtrgpune</span><span class="op">=</span>putchar ver3.c <span class="at">-o</span> ver3</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> cc -Dtrgpune=putchar ver3.c -o ver3</code></pre>
|
||||
<p><code>trgpune</code> is the ROT13 of <code>getchar()</code>, so <code>getchar()</code> and <code>putchar()</code>
|
||||
are exchanged in the ROT13 counterpart. It is easy to see that
|
||||
this is unavoidable. I must have a <code>#define</code> for a library
|
||||
@@ -207,14 +207,14 @@ first argument (argc) must be at least one).</p>
|
||||
function <code>vs()</code> to define in the ROT13 version. But a function
|
||||
called <code>vs()</code> turns into a function called <code>if()</code> in the original,
|
||||
so it can’t be done. Therefore, I do:</p>
|
||||
<div class="sourceCode" id="cb8"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a> expr1 <span class="op">&&</span> expr2 <span class="op">&&</span> <span class="op">(</span>expr3<span class="op">=</span>etc<span class="op">);</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> expr1 && expr2 && (expr3=etc);</code></pre>
|
||||
<p>which is the same as:</p>
|
||||
<div class="sourceCode" id="cb9"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a> <span class="cf">if</span> <span class="op">(</span>expr1 <span class="op">&&</span> expr2<span class="op">)</span> expr3<span class="op">=</span>etc<span class="op">;</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> if (expr1 && expr2) expr3=etc;</code></pre>
|
||||
<p>A/UX on the Macintosh doesn’t get this right; it evaluates ALL
|
||||
expressions if they aren’t in an assignment or conditional
|
||||
statement. This might warrant a warning, since other compilers
|
||||
may do this. I found MANY compilers botched:</p>
|
||||
<div class="sourceCode" id="cb10"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a> expr1 <span class="op">&&</span> <span class="op">(</span>expr2<span class="op">,</span>expr3<span class="op">);</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> expr1 && (expr2,expr3);</code></pre>
|
||||
<p><code>expr2</code> was OFTEN evaluated even if <code>expr1</code> was false. I removed
|
||||
such statements to make it more portable.</p>
|
||||
<h3 id="variable-names-worth-noting">Variable names worth noting</h3>
|
||||
@@ -224,11 +224,11 @@ such statements to make it more portable.</p>
|
||||
<p><code>tang</code> and <code>gnat</code> are both ROT13 and palindrome pairs!</p>
|
||||
<p>–</p>
|
||||
<p>Normally (!), a reversible C program is done thus:</p>
|
||||
<div class="sourceCode" id="cb11"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a> <span class="co">/**/</span> forward code <span class="co">/*/ edoc drawkcab /**/</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> /**/ forward code /*/ edoc drawkcab /**/</code></pre>
|
||||
<p>If your compiler nests comments, it will get this wrong.
|
||||
However, I have made some bits of the code palindromic,
|
||||
(or different, but reversible) so it is more like:</p>
|
||||
<div class="sourceCode" id="cb12"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a> <span class="co">/**/</span>forward<span class="co">/*//**/</span> palindromic <span class="co">/**//*/drawkcab/**/</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> /**/forward/*//**/ palindromic /**//*/drawkcab/**/</code></pre>
|
||||
<p>The code can therefore be interlaced. There are eight
|
||||
such palindromic bits. You can find them within the
|
||||
<code>/*//**/ /**//*/</code> pairs.</p>
|
||||
|
||||
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -21,7 +21,7 @@ For more detailed information see [1990 baruch bugs](../../bugs.html#1990_baruch
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
echo 4 | ./baruch
|
||||
echo 7 | ./baruch
|
||||
```
|
||||
@@ -29,7 +29,7 @@ For more detailed information see [1990 baruch bugs](../../bugs.html#1990_baruch
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
@@ -47,7 +47,7 @@ question. YMMV.
|
||||
|
||||
### Alternate build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make alt
|
||||
```
|
||||
|
||||
|
||||
@@ -144,7 +144,7 @@ Location: <a href="../../location.html#IL">IL</a> - <em>State of Israel</em> (<e
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<p>There is an alternate version for those using Turbo-C or MSC. See <a href="#alternate-code">alternate
|
||||
code</a> below for details.</p>
|
||||
<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
|
||||
@@ -152,10 +152,10 @@ code</a> below for details.</p>
|
||||
<pre><code> STATUS: INABIAF - please **DO NOT** fix</code></pre>
|
||||
<p>For more detailed information see <a href="../../bugs.html#1990_baruch">1990 baruch bugs</a>.</p>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> 4 <span class="kw">|</span> <span class="ex">./baruch</span></span>
|
||||
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> 7 <span class="kw">|</span> <span class="ex">./baruch</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> echo 4 | ./baruch
|
||||
echo 7 | ./baruch</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<h2 id="alternate-code">Alternate code:</h2>
|
||||
<p>This alternate code is for the <a href="https://en.wikipedia.org/wiki/0">very few</a>
|
||||
<a href="https://en.wikipedia.org/wiki/Microsoft_Windows">users</a>
|
||||
@@ -165,7 +165,7 @@ the <code>" #Q"</code> string was not changed as that showed worse looking outpu
|
||||
of improved output though admittedly we have no way to test the compilers in
|
||||
question. YMMV.</p>
|
||||
<h3 id="alternate-build">Alternate build:</h3>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> alt</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make alt</code></pre>
|
||||
<h3 id="alternate-use">Alternate use:</h3>
|
||||
<p>Use <code>baruch.alt</code> as you would <code>baruch</code>.</p>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
|
||||
@@ -1,20 +1,20 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./cmills [starting_cash]
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./cmills 5000
|
||||
```
|
||||
|
||||
|
||||
@@ -141,11 +141,11 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cmills</span> <span class="pp">[</span><span class="ss">starting_cash</span><span class="pp">]</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./cmills [starting_cash]</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./cmills</span> 5000</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./cmills 5000</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>The Makefile uses several <code>-D</code> defines. The following is is a list of the macros
|
||||
that may be changed:</p>
|
||||
|
||||
+3
-3
@@ -1,13 +1,13 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./dds
|
||||
```
|
||||
|
||||
@@ -16,7 +16,7 @@
|
||||
|
||||
Give the following lines as input:
|
||||
|
||||
```basic
|
||||
```<!---basic-->
|
||||
OLD LANDER.BAS
|
||||
RUN
|
||||
```
|
||||
|
||||
+3
-3
@@ -141,12 +141,12 @@ Location: <a href="../../location.html#GR">GR</a> - <em>Hellenic Republic</em> (
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./dds</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./dds</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<p>Give the following lines as input:</p>
|
||||
<pre class="basic"><code> OLD LANDER.BAS
|
||||
<pre class="<!---basic-->"><code> OLD LANDER.BAS
|
||||
RUN</code></pre>
|
||||
<p>NOTE: this entry is probably one of the only times CAPS LOCK might be worth
|
||||
having (though still not useful enough to enable :-) ) as all input has to be
|
||||
|
||||
+6
-6
@@ -1,20 +1,20 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
|
||||
## To use:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
echo foo bar | ./dg
|
||||
```
|
||||
|
||||
|
||||
## Try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
@@ -24,13 +24,13 @@
|
||||
Some C preprocessors got confused about single quotes in certain cases.
|
||||
In particular, the following source line:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
b12(ase(bco(acp(bi(acp(bcp(acp(bpl(aqu(bqu(A))))))))))))))))))))))))))))))
|
||||
```
|
||||
|
||||
sometimes has to be changed to:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
b12(ase(bco(acp(bi(acp(bcp(acp(bpl('A'))))))))))))))))))))))))))))
|
||||
```
|
||||
|
||||
@@ -56,7 +56,7 @@ As for the rot13 algorithm, it relies on `index(3)` to find if the
|
||||
character is in the set `A-Za-z`. `l[]` is an array that gets filled
|
||||
with:
|
||||
|
||||
```c
|
||||
```<!---c-->
|
||||
"nopqrstuvwxyzzzzabcdefghijklmmmmNOPQRSTUVWXYZZZZABCDEFGHIJKLMMMM"
|
||||
```
|
||||
|
||||
|
||||
+6
-6
@@ -141,17 +141,17 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="to-use">To use:</h2>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> foo bar <span class="kw">|</span> <span class="ex">./dg</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> echo foo bar | ./dg</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>Some C preprocessors got confused about single quotes in certain cases.
|
||||
In particular, the following source line:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> b12<span class="op">(</span>ase<span class="op">(</span>bco<span class="op">(</span>acp<span class="op">(</span>bi<span class="op">(</span>acp<span class="op">(</span>bcp<span class="op">(</span>acp<span class="op">(</span>bpl<span class="op">(</span>aqu<span class="op">(</span>bqu<span class="op">(</span>A<span class="op">))))))))))))))))))))))))))))))</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> b12(ase(bco(acp(bi(acp(bcp(acp(bpl(aqu(bqu(A))))))))))))))))))))))))))))))</code></pre>
|
||||
<p>sometimes has to be changed to:</p>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> b12<span class="op">(</span>ase<span class="op">(</span>bco<span class="op">(</span>acp<span class="op">(</span>bi<span class="op">(</span>acp<span class="op">(</span>bcp<span class="op">(</span>acp<span class="op">(</span>bpl<span class="op">(</span><span class="ch">'A'</span><span class="op">))))))))))))))))))))))))))))</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> b12(ase(bco(acp(bi(acp(bcp(acp(bpl('A'))))))))))))))))))))))))))))</code></pre>
|
||||
<p>particularly if the C preprocessor botches single quotes in cpp expansions,
|
||||
which we have done for the wider audience.</p>
|
||||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||||
@@ -167,7 +167,7 @@ source. The <code>axx()</code> <code>#define</code>s do the same, but add tokens
|
||||
<p>As for the rot13 algorithm, it relies on <code>index(3)</code> to find if the
|
||||
character is in the set <code>A-Za-z</code>. <code>l[]</code> is an array that gets filled
|
||||
with:</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode c"><code class="sourceCode c"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="st">"nopqrstuvwxyzzzzabcdefghijklmmmmNOPQRSTUVWXYZZZZABCDEFGHIJKLMMMM"</span></span></code></pre></div>
|
||||
<pre class="<!---c-->"><code> "nopqrstuvwxyzzzzabcdefghijklmmmmNOPQRSTUVWXYZZZZABCDEFGHIJKLMMMM"</code></pre>
|
||||
<p>If <code>index(3)</code> says the char is in the alphabet, then XOR the offset
|
||||
with <code>16</code> to translate, and output, otherwise pass it unchanged.</p>
|
||||
<!--
|
||||
|
||||
+6
-6
@@ -1,6 +1,6 @@
|
||||
## To build:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
make all
|
||||
```
|
||||
|
||||
@@ -9,7 +9,7 @@
|
||||
|
||||
To test the official C entry, one might try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
echo "Quartz glyph jocks vend, fix, BMW." | compress | ./btoa | ./jaw
|
||||
```
|
||||
|
||||
@@ -19,7 +19,7 @@ sentence.
|
||||
|
||||
#### Also try:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./try.sh
|
||||
```
|
||||
|
||||
@@ -39,14 +39,14 @@ it to 1530 bytes) which implements the complete shark utility. The script,
|
||||
The sender must have `compress` and `btoa`. To send, try:
|
||||
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
./shark.sh jaw.* README.md > receive
|
||||
```
|
||||
|
||||
The resulting file, `receive`, unpacks the input files
|
||||
even if the receiver lacks `uncompress` and `btoa`:
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
mkdir -p test
|
||||
cd test
|
||||
sh ../receive
|
||||
@@ -168,7 +168,7 @@ Construct `sharkmail`, to auto-split `sharkives` into mailable segments and mail
|
||||
them. Here's a simple one, which could be extended to enable auto-reassembly
|
||||
with one shell cmd at the far end.
|
||||
|
||||
```sh
|
||||
```<!---sh-->
|
||||
#!/bin/sh
|
||||
m=$1; shift
|
||||
shark $* | split -800 - /tmp/shark$$
|
||||
|
||||
+20
-20
@@ -147,14 +147,14 @@ Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></l
|
||||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||||
|
||||
<h2 id="to-build">To build:</h2>
|
||||
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">make</span> all</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> make all</code></pre>
|
||||
<h2 id="try">Try:</h2>
|
||||
<p>To test the official C entry, one might try:</p>
|
||||
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a> <span class="bu">echo</span> <span class="st">"Quartz glyph jocks vend, fix, BMW."</span> <span class="kw">|</span> <span class="ex">compress</span> <span class="kw">|</span> <span class="ex">./btoa</span> <span class="kw">|</span> <span class="ex">./jaw</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> echo "Quartz glyph jocks vend, fix, BMW." | compress | ./btoa | ./jaw</code></pre>
|
||||
<p>which should apply the identity transformation to a minimal holoalphabetic
|
||||
sentence.</p>
|
||||
<h4 id="also-try">Also try:</h4>
|
||||
<div class="sourceCode" id="cb3"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./try.sh</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./try.sh</code></pre>
|
||||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||||
<p>The program, in its base form, implements two useful utilities:</p>
|
||||
<ul>
|
||||
@@ -165,14 +165,14 @@ sentence.</p>
|
||||
it to 1530 bytes) which implements the complete shark utility. The script,
|
||||
<a href="shark.sh">shark.sh</a>, contains a <code>jaw.c</code> embedded within it!</p>
|
||||
<p>The sender must have <code>compress</code> and <code>btoa</code>. To send, try:</p>
|
||||
<div class="sourceCode" id="cb4"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a> <span class="ex">./shark.sh</span> jaw.<span class="pp">*</span> README.md <span class="op">></span> receive</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> ./shark.sh jaw.* README.md > receive</code></pre>
|
||||
<p>The resulting file, <code>receive</code>, unpacks the input files
|
||||
even if the receiver lacks <code>uncompress</code> and <code>btoa</code>:</p>
|
||||
<div class="sourceCode" id="cb5"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a> <span class="fu">mkdir</span> <span class="at">-p</span> test</span>
|
||||
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a> <span class="bu">cd</span> test</span>
|
||||
<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a> <span class="fu">sh</span> ../receive</span>
|
||||
<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a> <span class="fu">cmp</span> ../jaw.c jaw.c</span>
|
||||
<span id="cb5-5"><a href="#cb5-5" aria-hidden="true" tabindex="-1"></a> <span class="fu">cmp</span> ../README.md README.md</span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> mkdir -p test
|
||||
cd test
|
||||
sh ../receive
|
||||
cmp ../jaw.c jaw.c
|
||||
cmp ../README.md README.md</code></pre>
|
||||
<p>NOTE: a limitation is that the script should be in the parent directory of the
|
||||
directory it is run from.</p>
|
||||
<h2 id="authors-remarks">Authors’ remarks:</h2>
|
||||
@@ -262,17 +262,17 @@ left, and source-to-source transformations galore.</p></li>
|
||||
<p>Construct <code>sharkmail</code>, to auto-split <code>sharkives</code> into mailable segments and mail
|
||||
them. Here’s a simple one, which could be extended to enable auto-reassembly
|
||||
with one shell cmd at the far end.</p>
|
||||
<div class="sourceCode" id="cb6"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a> <span class="co">#!/bin/sh</span></span>
|
||||
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a> <span class="va">m</span><span class="op">=</span><span class="va">$1</span><span class="kw">;</span> <span class="bu">shift</span></span>
|
||||
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a> <span class="ex">shark</span> <span class="va">$*</span> <span class="kw">|</span> <span class="fu">split</span> <span class="at">-800</span> <span class="at">-</span> /tmp/shark<span class="va">$$</span></span>
|
||||
<span id="cb6-4"><a href="#cb6-4" aria-hidden="true" tabindex="-1"></a> <span class="va">n</span><span class="op">=</span><span class="kw">`</span><span class="fu">ls</span> /tmp/shark<span class="va">$$</span><span class="pp">*</span> <span class="kw">|</span> <span class="fu">wc</span> <span class="at">-l</span> <span class="kw">|</span> <span class="fu">sed</span> <span class="st">'s/ *//'</span><span class="kw">`</span></span>
|
||||
<span id="cb6-5"><a href="#cb6-5" aria-hidden="true" tabindex="-1"></a> <span class="va">p</span><span class="op">=</span>0</span>
|
||||
<span id="cb6-6"><a href="#cb6-6" aria-hidden="true" tabindex="-1"></a> <span class="cf">for</span> f <span class="kw">in</span> <span class="kw">`</span><span class="fu">ls</span> /tmp/shark<span class="va">$$</span><span class="pp">*</span><span class="kw">`</span></span>
|
||||
<span id="cb6-7"><a href="#cb6-7" aria-hidden="true" tabindex="-1"></a> <span class="cf">do</span></span>
|
||||
<span id="cb6-8"><a href="#cb6-8" aria-hidden="true" tabindex="-1"></a> <span class="va">p</span><span class="op">=</span><span class="kw">`</span><span class="fu">expr</span> <span class="va">$p</span> + 1<span class="kw">`</span></span>
|
||||
<span id="cb6-9"><a href="#cb6-9" aria-hidden="true" tabindex="-1"></a> <span class="ex">mail</span> <span class="at">-s</span> <span class="st">"bundle (</span><span class="va">$p</span><span class="st"> of </span><span class="va">$n</span><span class="st">) from '</span><span class="kw">`</span><span class="fu">whoami</span><span class="kw">`</span><span class="st">'"</span> <span class="va">$m</span> <span class="op"><</span> <span class="va">$f</span></span>
|
||||
<span id="cb6-10"><a href="#cb6-10" aria-hidden="true" tabindex="-1"></a> <span class="cf">done</span></span>
|
||||
<span id="cb6-11"><a href="#cb6-11" aria-hidden="true" tabindex="-1"></a> <span class="fu">rm</span> /tmp/shark<span class="va">$$</span><span class="pp">*</span></span></code></pre></div>
|
||||
<pre class="<!---sh-->"><code> #!/bin/sh
|
||||
m=$1; shift
|
||||
shark $* | split -800 - /tmp/shark$$
|
||||
n=`ls /tmp/shark$$* | wc -l | sed 's/ *//'`
|
||||
p=0
|
||||
for f in `ls /tmp/shark$$*`
|
||||
do
|
||||
p=`expr $p + 1`
|
||||
mail -s "bundle ($p of $n) from '`whoami`'" $m < $f
|
||||
done
|
||||
rm /tmp/shark$$*</code></pre>
|
||||
<h3 id="shark-history">Shark history:</h3>
|
||||
<ul>
|
||||
<li><p>May 1987: Karl Fox introduces 1023-byte <code>zcat.c</code> to USENET.
|
||||
|
||||
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