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Landon Curt Noll f07fec3a98 fix tar-year.sh, removed use of .tar.tstamp files 
Eliminated the need for the `.tar.tstamp` files.  It became intractable
to produce a tarball that was byte-for-byte identical to a tarball
on another platform.  We further simplified the process used by the
`bin/tar-year.sh` tool to no longer need `.tar.tstamp` files.
Removed `.tar.tstamp` files and updated the manifest.
Sorry (tm Canada 🇨🇦) for the "flip-flop".

The `bin/tar-year.sh` tool now uses a similar algorithm to how
`bin/tar-entry.sh` determines if a compressed tarball needs to be
rebuilt.

Changed `bin/tar-entry.sh` VERSION from "1.3.3 2024-03-27"
to "1.3.4 2024-03-27".

Changed `bin/tar-year.sh` VERSION from "1.1.3 2024-03-27"
to "1.2 2024-03-27".

Performed `make www` and `make form_entry_tarball`
and `make form_year_tarball` to complete the above
actions and test these changes under macOS.

TODO: Test the `bin/tar-year.sh` tool under Linux.

TODO: Address issues with building the top level `ioccc.tar.bz2`
      and the `bin/tar-all.sh` tool and the `make form_all_tarball` rule.

NOTE: The `bin/tar-all.sh` tool and the `make form_all_tarball` rule
and the `make tar` should **NOT** be used at this time.
2024-03-27 16:49:11 -07:00

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<title>1998/schnitzi - Best Flow Control</title>
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<img src="../../png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
<h1>The International Obfuscated C Code Contest</h1>
<h2>1998/schnitzi - Best Flow Control</h2>
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<a class="Left" href="../index.html">&uarr; 1998 &uarr;</a>
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<h2 id="author"><a name="author"></a>Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Mark_Schnitzius">Mark Schnitzius</a><br>
Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em>
<br><br></li>
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<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>
<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#1998_schnitzi">1998 schnitzi 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">./schnitzi</span> n <span class="op">&gt;</span> sort.c</span>
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> sort</span>
<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a><span class="ex">./sort</span></span>
<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a><span class="co"># enter three numbers, space separated</span></span>
<span id="cb3-5"><a href="#cb3-5" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb3-6"><a href="#cb3-6" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> x y z <span class="kw">|</span> <span class="ex">./sort</span></span></code></pre></div>
<p>where <code>n</code> and <code>x</code>, <code>y</code> and <code>z</code> are numbers.</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">./try.sh</span></span></code></pre></div>
<p>What happens if at the command line you don’t specify <code>n</code> numbers that the
program expects? For instance 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">./schnitzi</span> 5 <span class="op">&gt;</span> sort.c</span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a><span class="fu">make</span> sort</span>
<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a><span class="co"># try running the next command four or five times:</span></span>
<span id="cb5-5"><a href="#cb5-5" aria-hidden="true" tabindex="-1"></a><span class="bu">echo</span> 2 5 3 1 <span class="kw">|</span> <span class="ex">./sort</span></span></code></pre></div>
<p>Why does this happen?</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>This is a beautiful program. How can a program with no conditional (except for
the fixes for modern systems) behavior at all have output which
depends on anything?</p>
<p>For hints on deciphering this, see below past the Author’s remarks;
they’re a nice summary, but they leave the mystery intact.</p>
<p>BTW: the author notes an incredible lipogram story called
<a href="https://www.gutenberg.org/cache/epub/47342/pg47342.txt">Gadsby</a> which has no
letter E in the story. He did not note this but it has over 50000 (50 thousand)
(!!) words without the letter E which is one of the most common letters!</p>
<h2 id="authors-remarks">Author’s remarks:</h2>
<p>In literary circles, there is a poetic form called a “lipogram”,
which is a poem in which a specific letter has been distinctly
avoided. This principle can be applied in other ways. For
instance, in this paragraph, the vowel which immediately follows
<code>t</code> in the alphabet is nowhere to be seen. There is even an
entire novel (E. V. Wright’s “Gadsby”) in which no word contains
the letter <code>e</code>.</p>
<p>The IOCCC has been no stranger to this concept. Several winning entries from
years past have accomplished interesting feats while completely avoiding the use
of certain C constructs thought to be essential (e.g.
<a href="../../1988/robison/robison.c">1988/robison.c</a>). If you have to ask why they would
do it this way, then this contest just isn’t for you.</p>
<p>In continuing with this fine tradition, this program suggests to the ANSI
committee some new practical simplifications for the C language. For instance,
it appears that CONDITIONAL BRANCHING isn’t really necessary. So, we can do
away with <code>while</code>, <code>do...while</code>, <code>for</code>, <code>if</code>/<code>else</code>, <code>switch</code>, <code>?:</code>, or anything
else that might cause any kind of non-deterministic jump in the code. There’s
too much uncertainty in the world anyway.</p>
<p>Function parameters and return types just confuse people anyway, so
get rid of them. Same with local variables. In fact, all you really
need are assignment statements, and maybe one <code>printf(3)</code> and one <code>goto</code>.</p>
<p>This style of programming is also ideal for systems with limited
memory capacity, since the function call stack never goes beyond
a depth of one.</p>
<p>So what does it do? Give it an integer <code>(1 &lt; n &lt; 27)</code> on the command
line, such as</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">./schnitzi</span> 5</span></code></pre></div>
<p>The output will itself be a lipographic program, one which expects input of
(in this case) five numbers and prints them out sorted. It sorts
them, however, using only <code>if/else</code> statements, without arrays or
looping. To see the resulting program run, redirect the output from
<code>schnitzi</code> into another file, like this</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">./schnitzi</span> 4 <span class="op">&gt;</span> sort.c</span></code></pre></div>
<p>and then compile it.</p>
<h3 id="spoilers-and-hints">Spoilers And Hints:</h3>
<p>The big key to this program is figuring out what the names of the
functions ought to be; a bit of research may allow you to guess at
a few crucial ones.</p>
<p>The only function ever called is <code>O</code>, but <code>O</code> is just set to point to
other functions all the time. Or, almost all the time.</p>
<p>So how does <code>h</code> get set, and what to?</p>
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<h1 id="inventory-for-1998schnitzi"><a name="inventory"></a>Inventory for 1998/schnitzi</h1>
<p><a href="#top">Jump to top</a></p>
<h2 id="primary-files">Primary files</h2>
<ul>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/schnitzi/schnitzi.c">schnitzi.c</a> - entry source</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/schnitzi/Makefile">Makefile</a> - entry Makefile</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/schnitzi/schnitzi.orig.c">schnitzi.orig.c</a> - original source</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/schnitzi/try.sh">try.sh</a> - how to run</li>
<li><a href="1998_schnitzi.tar.bz2">1998_schnitzi.tar.bz2</a> - download entry source</li>
</ul>
<h2 id="secondary-files">Secondary files</h2>
<ul>
<li><a href="index.html">index.html</a> - entry home page</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/schnitzi/README.md">README.md</a> - markdown source for index.html</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/schnitzi/.entry.json">.entry.json</a> - description of entry in JSON</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1998/schnitzi/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
<li><a href=".path">.path</a> - directory path from top directory</li>
</ul>
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<h2>Copyright and CC BY-SA 4.0 License</h2>
<p>This file and web page is:</p>
<blockquote><b>Copyright &copy; 1984-2024 by Landon Curt Noll. All Rights Reserved.</b></p></blockquote>
<p>You are free to share and adapt this file under the terms of this license:</p>
<blockquote><b>Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)</b></blockquote>
<p>For more information, see:</p>
<blockquote><a
href="https://creativecommons.org/licenses/by-sa/4.0/">https://creativecommons.org/licenses/by-sa/4.0/</a></blockquote>
<h2>Coda</h2>
<p><a href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1998%2Fschnitzi%2Findex.html">Nu HTML check this web page</a></p>
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