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Landon Curt Noll f29b37e49a improve HTML menus, add social.html, prep for IOCCC28 winners
Prepare for the winners of **IOCCC28**.

> However these are not the 2024 droids you are looking for.  :-)

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separate menus `Status -> IOCCC rules` and `Status -> IOCCC guidelines`.

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due to the extensive changes made for **IOCCC28**.

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2025-07-26 13:06:29 -07:00

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<h1>The International Obfuscated C Code Contest</h1>
<h2>2000/schneiderwent - Most timely output</h2>
<h3>Prints the aproximate time in words</h3>
</div>
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<a class="Left" href="../robison/index.html">&larr; 2000/robison</a>
<a class="Left" href="../index.html">&uarr; 2000 &uarr;</a>
<a class="Left" href="../thadgavin/index.html">2000/thadgavin &rarr;</a>
<a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/schneiderwent.c">C code</a>
<a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/Makefile">Makefile</a>
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<h2 id="author">Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Craig_Schneiderwent">Craig Schneiderwent</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
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<h2 id="to-build">To build:</h2>
<pre><code> make</code></pre>
<h2 id="to-use">To use:</h2>
<pre><code> ./schneiderwent</code></pre>
<h2 id="try">Try:</h2>
<pre><code> ./schneiderwent schneiderwent.data
./schneiderwent</code></pre>
<p>What’s the difference?</p>
<p>If you have a long while to spare (and you’re bored enough that you could watch
paint dry :-) ) you might also try:</p>
<pre><code> ./try.sh</code></pre>
<p>Alternatively, you can check on it later on, to see all the entry does. Or if
you wish to make it run faster, you can override how long it sleeps per
iterations and how many iterations it runs. For instance to make it sleep only
30 seconds and run only twice:</p>
<pre><code> SLEEP=30 ITERATIONS=2 ./try.sh</code></pre>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>Very nice play by the rules and portable text obfuscation.
This far surpasses old tricks like adding or subtracting 1
from every character in a C string.</p>
<p>Translating the messages into your language of preference while
keeping the program portable between different encodings
(Chinese, Japanese, Russian - anyone?) may be an entertaining task.</p>
<h2 id="authors-remarks">Author’s remarks:</h2>
<p>This entry displays the current time to the console, for example:</p>
<blockquote>
<p>it’s just after ten ’til 6 in the evening</p>
</blockquote>
<p>FWIW, none of the compilers with which this entry was tested issued
any warnings or errors in compiling the source for this entry. No
doubt lint will complain about the goto statements.</p>
<p>The <a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/schneiderwent.data">schneiderwent.data</a> file consists of the values used by
multiple table lookups. This is simply good program design, separating these
values from the source code allows changing the behavior of the application
without recompiling.</p>
<p>Having learned COBOL at an early age, the <code>pthread</code>s of my thought
processes tend to be translated into code in a verbose manner. Some
of the <code>#define</code>s in this entry’s code are to mitigate this personal
deficiency.</p>
<h3 id="obfuscation">Obfuscation</h3>
<p>Obfuscation in this entry consists of:</p>
<ul>
<li><code>printf(3)</code>ing console messages stored as
<a href="https://en.wikipedia.org/wiki/EBCDIC">EBCDIC</a> character values - this is not
an attempt at encryption, but rather at cross platform compatibility.</li>
<li><a href="https://en.wikipedia.org/wiki/ASCII">ASCII</a> character values are calculated
from the <a href="https://en.wikipedia.org/wiki/EBCDIC">EBCDIC</a> in a particularly ugly
abuse of the <code>?:</code> operator. Detection of whether to print the ASCII or EBCDIC
values is done by taking the remainder of dividing the character <code>'J'</code> by <code>2</code> -
the ASCII value of the character is even, the EBCDIC value is odd.</li>
<li>The messages to be <code>printf(3)</code>ed are determined via multiple table lookups and
bit-masked values.</li>
<li>For minutes, the bit position turned on is multiplied by two to determine the
message to be <code>printf(3)</code>ed.</li>
<li>For hours, the straight bit position is used.</li>
<li>This entry mostly eschews function calls for the often overlooked
<code>setjmp(3)</code>/<code>longjmp(3)</code> combination.</li>
<li>The trigraphs are not there as obfuscation nor are they there to annoy the
judges - it’s just the easiest way to get around the absence of square brackets
in a normal 3270 environment.</li>
</ul>
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<div id="inventory">
<h1 id="inventory-for-2000schneiderwent">Inventory for 2000/schneiderwent</h1>
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<h2 id="primary-files">Primary files</h2>
<ul>
<li><a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/schneiderwent.c">schneiderwent.c</a> - entry source code</li>
<li><a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/Makefile">Makefile</a> - entry Makefile</li>
<li><a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/schneiderwent.orig.c">schneiderwent.orig.c</a> - original source code</li>
<li><a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/try.sh">try.sh</a> - script to try entry</li>
<li><a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/schneiderwent.data">schneiderwent.data</a> - table lookups values</li>
</ul>
<h2 id="secondary-files">Secondary files</h2>
<ul>
<li><a href="2000_schneiderwent.tar.bz2">2000_schneiderwent.tar.bz2</a> - download entry tarball</li>
<li><a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/README.md">README.md</a> - markdown source for this web page</li>
<li><a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/.entry.json">.entry.json</a> - entry summary and manifest in JSON</li>
<li><a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
<li><a href="https://github.com/ioccc-src/winner/blob/master/2000/schneiderwent/.path">.path</a> - directory path from top level directory</li>
<li><a href="index.html">index.html</a> - this web page</li>
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