Landon Curt Noll
cbc022d864
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<link rel="stylesheet" href="../../ioccc.css">
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
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<title>1993/schnitzi - Obfuscated Intelligence Award</title>
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<meta name="description" content="1993 IOCCC entry schnitzi - Obfuscated Intelligence Award">
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<meta name="keywords" content="IOCCC, 1993, IOCCC 1993, IOCCC entry, schnitzi, Obfuscated Intelligence Award">
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<div class="header">
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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>1993/schnitzi - Obfuscated Intelligence Award</h2>
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<div class="topnav">
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<a class="Left" href="../rince/index.html">← rince</a>
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<a class="Left" href="../index.html">↑ 1993 ↑</a>
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<a class="Left" href="../vanb/index.html">vanb →</a>
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<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/1993/schnitzi/schnitzi.c">C code</a>
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<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/1993/schnitzi/Makefile">Makefile</a>
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<a class="Right" href="#inventory">Inventory</a>
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<a href="#content">Jump to contents</a>
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<div class="sidenav">
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<a href="../../index.html">IOCCC Home</a>
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<a href="../../years.html">Winning Entries</a>
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<a href="../../authors.html">People who have won</a>
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<a href="../../location.html">Location of authors</a>
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<a href="../../news.html">IOCCC News</a>
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<a href="../../status.html">Contest status</a>
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<a href="../../faq.html#submit">How to enter the IOCCC</a>
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<a href="../../faq.html">FAQ</a>
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<hr>
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<div class="sidenav">
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<a href="../../bugs.html">Bugs & (mis)features</a>
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<a href="../../faq.html#fix_an_entry">Fixing IOCCC entries</a>
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<a href="../../faq.html#fix_web_site">Fixing the web site</a>
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<a href="../../faq.html#fix_author">Fixing author info</a>
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<a href="../../thanks-for-help.html">Thanks for the help</a>
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</div>
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<hr>
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<div class="sidenav">
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<a href="../../judges.html">The IOCCC Judges</a>
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<a href="../../contact.html">Contacting the IOCCC</a>
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<h2 id="author"><a name="author"></a>Author:</h2>
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<ul>
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<li>Name: <a href="../../authors.html#Mark_Schnitzius">Mark Schnitzius</a><br>
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Location: <a href="../../location.html#ZZ">ZZ</a> - <em>Unknown location</em>
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<br><br></li>
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<h2 id="to-build">To build:</h2>
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<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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<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#1993_schnitzi">1993 schnitzi bugs</a>.</p>
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<h2 id="to-use">To use:</h2>
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<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> file</span></code></pre></div>
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<p>where</p>
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<p><code>file</code> is a file containing some text.</p>
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<p>Certain input will cause the program to fail as described
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in <a href="../../bugs.html#1993_schnitzi">1993 schnitzi bugs</a>.</p>
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<h2 id="try">Try:</h2>
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<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">./schnitzi</span> schnitzi.info</span>
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<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a><span class="co"># ask some questions suggested by the author, noted below</span></span></code></pre></div>
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<p>We also suggest you ask the program the following questions:</p>
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<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">Who</span> is Mark Schnitzus<span class="pp">?</span></span>
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<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a></span>
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<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a><span class="ex">Who</span> was Jack the Ripper <span class="pp">?</span></span></code></pre></div>
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<p>Notice how it still manages to answer the first question despite there being an
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intentional spelling error there.</p>
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<p>Try feeding the program source to the program and ask both:</p>
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<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">What</span> is cat <span class="pp">?</span></span>
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<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a><span class="ex">What</span> is cat<span class="pp">?</span></span></code></pre></div>
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<p>What happens if you ask it other questions with and without a space before the
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<code>?</code>?</p>
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<h2 id="judges-remarks">Judges’ remarks:</h2>
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<p>After this program prints the contents of ‘file’, ask it
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some questions related to the text.</p>
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<p>The author suggests the following questions when using
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<a href="schnitzi.info">schnitzi.info</a>:</p>
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<ul>
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<li>Who is Mark Schnitzius?</li>
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<li>What exactly does this program do?</li>
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<li>What language is it written in?</li>
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<li>Has the Loch Ness monster really been captured?</li>
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<li>Who was Hitler?</li>
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<li>Were the NASA Moon landings faked?</li>
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<li>Is it true that Elvis is alive?</li>
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<li>Do colorless green ideas sleep furiously?</li>
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</ul>
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<p>We suggest you try using the body (minus the header and signature line)
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of a Usenet article. You might want to try something from alt.flame. :-)</p>
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<p>NOTE: If you have certain <code>'</code> in the question this entry might fail.</p>
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<h2 id="authors-remarks">Author’s remarks:</h2>
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<p>I wanted to write a program that would read in a text file in
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natural language (such as English) and answer questions about that
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text file. I thought this might be a complicated task, and I was
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right – it took me over 800 bytes. Of course, it doesn’t always
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work, but that’s AI for you.</p>
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<p>This program accepts the name of a text file as the first parameter. For
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example, to run it on the supplied data file called ‘schnitzi.info’ you would
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type <code>./schnitzi schnitzi.info</code>. It echoes the file, then gives you a prompt
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where you may type in questions about that text. The more words you use which
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are actually present in the text file, the better results you get. You’ll need
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to hit <code>ctrl-c</code> to break out of the program. Just hitting <code>return</code> at the
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prompt will reprint the paragraph.</p>
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<p>If you’re curious as to how it works, I guess you could feed in the
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source as the input file and ask “How does this work?” at the prompt,
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but I’m not guaranteeing any results…</p>
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<h3 id="compilation-notes">Compilation notes</h3>
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<ul>
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<li><p>The use of <code>strcasecmp(3)</code> may be non-standard. <code>strcmp(3)</code> can be substituted for
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it, with a slight performance penalty.</p></li>
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<li><p>This program depends on the first command-line parameter, typically called
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<code>argv[0]</code>, to hold the name of the executable. It is my understanding that this
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property of <code>argv[0]</code> is not guaranteed on some systems.</p></li>
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</ul>
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<h3 id="obfuscation">Obfuscation</h3>
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<ul>
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<li><p>It uses a hidden string to test for punctuation.</p></li>
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<li><p>The layout, variable names, and expression format have been chosen in such a
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way as to cause visual confusion.</p></li>
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<li><p>It uses uses external <code>system(3)</code> calls to echo the text file and break up the
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question into individual words with a recursive call.</p></li>
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<li><p>It uses a clever hack to simulate artificial intelligence.</p></li>
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</ul>
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<p>The text for the info file, by the way, consists largely of headlines
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from the Weekly World News.</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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-->
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<h1 id="inventory-for-1993schnitzi"><a name="inventory"></a>Inventory for 1993/schnitzi</h1>
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<p><a href="#top">Jump to top</a></p>
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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/1993/schnitzi/schnitzi.c">schnitzi.c</a> - entry source</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1993/schnitzi/Makefile">Makefile</a> - entry Makefile</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1993/schnitzi/schnitzi.orig.c">schnitzi.orig.c</a> - original source</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1993/schnitzi/schnitzi.info">schnitzi.info</a> - some interesting statements</li>
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<li><a href="1993_schnitzi.tar.bz2">1993_schnitzi.tar.bz2</a> - download entry 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="index.html">index.html</a> - entry home page</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1993/schnitzi/README.md">README.md</a> - markdown source for index.html</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1993/schnitzi/.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/1993/schnitzi/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
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<li><a href=".path">.path</a> - directory path from top directory</li>
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</ul>
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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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-->
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<div class="footer">
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<h2>Copyright and CC BY-SA 4.0 License</h2>
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||
<p>This file and web page is:</p>
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||
<blockquote><b>Copyright © 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
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||
href="https://creativecommons.org/licenses/by-sa/4.0/">https://creativecommons.org/licenses/by-sa/4.0/</a></blockquote>
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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%2F1993%2Fschnitzi%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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