Landon Curt Noll
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<img src="../../png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
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<h1>The International Obfuscated C Code Contest</h1>
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<h2>1995/cdua - Best Output</h2>
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<div class="navbar">
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<a class="Left Disabled" href="#">first entry</a>
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<a class="Left" href="../index.html">↑ 1995 ↑</a>
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<a class="Left" href="../dodsond1/index.html">dodsond1 →</a>
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<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/cdua.c">C code</a>
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<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/Makefile">Makefile</a>
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<a class="Right" href="#inventory">Inventory</a>
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<h2 id="author">Author:</h2>
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<ul>
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<li>Name: <a href="../../authors.html#Carlos_Duarte">Carlos Duarte</a><br>
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Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em></li>
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<!-- BEFORE: 1st line of markdown file: 1995/cdua/README.md -->
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<h2 id="to-build">To build:</h2>
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<p>We recommend that you try the alternate version first so you can see what this
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entry looked like back in 1995 (with a configurable speed). See the <a href="#original-code">original
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code</a> section below for the original entry.</p>
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<pre><code> make alt</code></pre>
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<p>The alternate version uses <code>usleep(3)</code> with <code>SLEEP</code> (defined in the Makefile,
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default <code>3000</code>) microseconds to make it easier to see the maze being solved in
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real time. You can redefine <code>SLEEP</code> at compile time to reconfigure it in case
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it’s going too slow, too fast :-) or you’re doing some strange experiment like
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making it 100000 (which is actually fun :-) ).</p>
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<h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
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<p>The current status of this entry is:</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#1995_cdua">1995 cdua bugs</a>.</p>
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<h2 id="to-use">To use:</h2>
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<pre><code> ./cdua.alt</code></pre>
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<h2 id="try">Try:</h2>
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<pre><code> make SLEEP=1500 clobber alt
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./cdua.alt # press enter and watch it go much faster!</code></pre>
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<p>You might also like to try:</p>
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<pre><code> make SLEEP=65000 clobber alt
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./cdua.alt # press enter and watch it go much slower!</code></pre>
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<p>Do you see anything strange in this version when <code>SLEEP</code> is a high value like
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<code>65000</code>? What happens if you use <code>100000</code>? Is this strange output still there?
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Why?</p>
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<h2 id="original-code">Original code:</h2>
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<p>With modern systems this was hard to see it solve it in real time because it
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goes so quickly which is why we recommend the alternate version first: you can
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actually see it being solved in real time rather than have it go by in a flash.</p>
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<p>If you wish to use the original version, for instance if you wish to see how
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fast your computer is :-) or use both to see the difference, you can do so.</p>
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<h3 id="original-build">Original build:</h3>
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<pre><code> make all</code></pre>
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<h3 id="original-use">Original use:</h3>
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<pre><code> ./cdua</code></pre>
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<h2 id="judges-remarks">Judges’ remarks:</h2>
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<p>This could be used as the basis of an a-maze-ing screen exerciser.</p>
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<h2 id="authors-remarks">Author’s remarks:</h2>
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<p>A program that generates a maze, and then solves it, all this being seen by the
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user. Some highlights of obfuscation are: 3 step function in one - <code>main()</code>,
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several recursive calls with conditional actions, and just one (big and ugly)
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statement to solve the maze.</p>
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<!--
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Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
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You are free to share and adapt this file under the terms of this license:
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Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
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For more information, see:
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https://creativecommons.org/licenses/by-sa/4.0/
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<div id="inventory">
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<h1 id="inventory-for-1995cdua">Inventory for 1995/cdua</h1>
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</div>
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<h2 id="primary-files">Primary files</h2>
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<ul>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/cdua.c">cdua.c</a> - entry source</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/Makefile">Makefile</a> - entry Makefile</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/cdua.alt.c">cdua.alt.c</a> - alternative source</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/cdua.orig.c">cdua.orig.c</a> - original source</li>
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</ul>
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<h2 id="secondary-files">Secondary files</h2>
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<ul>
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<li><a href="1995_cdua.tar.bz2">1995_cdua.tar.bz2</a> - download entry tarball</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/README.md">README.md</a> - markdown source for this web page</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/.entry.json">.entry.json</a> - description of entry in JSON</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1995/cdua/.path">.path</a> - directory path from top directory</li>
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<li><a href="index.html">index.html</a> - this web page</li>
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</ul>
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<h4>
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<!--
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Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
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You are free to share and adapt this file under the terms of this license:
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Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
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For more information, see:
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<div id="copyright"><h2>Copyright and CC BY-SA 4.0 License</h2></div>
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<p>All IOCCC content including this file and web page are:</p>
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<b> Copyright © 1984-2024 by Landon Curt Noll. <a href="https://creativecommons.org/faq/#what-does-some-rights-reserved-mean">Some Rights Reserved</a>.</b>
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<p>This work is licensed by Landon Curt Noll under:</p>
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<p><b><a href="https://creativecommons.org/licenses/by-sa/4.0/?ref=chooser-v1"
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target="_blank" rel="license noopener noreferrer" style="display:inline-block;"> CC BY-SA 4.0
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<h2>Coda</h2>
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<p><a href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1995%2Fcdua%2Findex.html">Nu HTML check this web page</a></p>
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<p><a href="#top">Jump to top</a> <a href="#content">Jump to Content</a> <a href="#inventory">Jump to Inventory</a></p>
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