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ioccc/1990/baruch/index.html
T
Cody Boone Ferguson af5482825c Reorganise menus
The sections have been modified a fair amount. The Entries menu has been
extended to have: Fixing entries, Updating author info, Thanks for the
help. The first two were moved from FAQ and the last one from About.
The rationale for these, in order: entries and authors have to do with
entries and most of the help involves entries. It also has to do with
website but in 'about' it does not seem the right place, unless maybe it
is renamed to 'Credits' or something (I am not suggesting this one way
or the other). This one is debatable but that was the rationale.

The Status menu has been extended to have: Markdown guidelines and
Security policy. The rationale is that the markdown guidelines are part
of contest guidelines and the security policy is about the status of the
entries and how if there are any security problems they will not be
addressed (instead of about the IOCCC).

The FAQ was extended to have: Compiling entries, Running entries, How to
help. The reason to not have compiling and running entries under Entries
is because this is 'how to' and also the menu was too long. How to help
seems like a good idea under FAQ too (was in About).

About was extended to have the new 'about.html' page (from about.md).
This is a rare case where a new file is useful as it fits under 'About'.
The menu now is: Home page, About the IOCCC, The Judges, Contact us. I
was pondering the 'About [the IOCCC]' at the top and also naming it
'About us' but it seemed like a link to index.html was necessary and as
for 'about us' it seemed less clear as to whether it was about the
judges or the contest itself. The FAQ has been updated slightly for
this.

After further inspection the bin/index.html and the inc/index.html links
were removed from the about section.

With these changes, renaming an item or slight reordering
notwithstanding, I believe that #2006 is probably in good shape.
2024-10-25 11:23:21 -07:00

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<h1>The International Obfuscated C Code Contest</h1>
<h2>1990/baruch - Best small program</h2>
<h3>short prog to solve N-queens problem</h3>
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<a class="Left" href="../../1989/westley/index.html">&larr; 1989/westley</a>
<a class="Left" href="../index.html">&uarr; 1990 &uarr;</a>
<a class="Left" href="../cmills/index.html">1990/cmills &rarr;</a>
<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1990/baruch/baruch.c">C code</a>
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<div id="author">
<h2 id="authors">Authors:</h2>
</div>
<ul>
<li>Name: <a href="../../authors.html#Baruch_Nissenbaum">Baruch Nissenbaum</a><br>
Location: <a href="../../location.html#IL">IL</a> - <em>State of Israel</em> (<em>Israel</em>)
<br><br></li>
<li>Name: <a href="../../authors.html#Doron_Osovlanski">Doron Osovlanski</a><br>
Location: <a href="../../location.html#IL">IL</a> - <em>State of Israel</em> (<em>Israel</em>)</li>
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<h2 id="to-build">To build:</h2>
<pre><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>
<p>The current status of this entry is:</p>
<blockquote>
<p><strong>STATUS: INABIAF - please DO NOT fix</strong></p>
</blockquote>
<p>For more detailed information see <a href="../../bugs.html#1990_baruch">1990/baruch in bugs.html</a>.</p>
<h2 id="to-use">To use:</h2>
<pre><code> echo 4 | ./baruch
echo 7 | ./baruch</code></pre>
<h2 id="try">Try:</h2>
<pre><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>
<a href="https://www.ioccc.org">here</a> who will need it. Nonetheless if you’re using
Turbo-C or MSC, the code is available, based on the authors’ remarks except that
the <code>" #Q"</code> string was not changed as that showed worse looking output instead
of improved output though admittedly we have no way to test the compilers in
question. YMMV.</p>
<h3 id="alternate-build">Alternate build:</h3>
<pre><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>
<p>This program reads an integer between 4 and 99 from the <code>stdin</code>.</p>
<p><strong>NOTE</strong>: The original program did not have a newline at the end of the file. We
added a final newline to the file to make unpacking easy.</p>
<h2 id="authors-remarks">Authors’ remarks:</h2>
<p>The goal of this work was to write a program that solves the classic <a href="https://en.wikipedia.org/wiki/Eight_queens_puzzle">n-queens
problem</a>, with a board size
of up to 99x99, while keeping the program as short as possible.</p>
<p>The program finds all possibilities to place N chess queens on an NxN
<a href="https://en.wikipedia.org/wiki/Chessboard">chessboard</a> so that no queen is in
range of any other queen (not in the same column row or diagonal). For each
solution the chess board and the place of the queens is printed to stdout.</p>
<p>This program is about as simple and as readable as possible. To make things
even more simple we used a very limited subset of C:</p>
<ul>
<li>No pre-processor statements</li>
<li>Only one, harmless, <code>for</code> statement</li>
<li>No <code>if</code>s</li>
<li>No <code>break</code>s</li>
<li>No <code>case</code>s</li>
<li>No functions outside the standard C library</li>
<li>No <code>goto</code>s</li>
<li>No structures</li>
</ul>
<p>In short, it contains no C language that might confuse the innocent reader. :-)</p>
<p>This program demonstrates the claim that in C, any program can be written using
a single ‘for’ statement, as long as it is long enough.</p>
<h3 id="for-pc-users">For PC users:</h3>
<p>In order to compile the program under Turbo-C or MSC, <code>int</code> should be inserted
at the beginning of the program. For better looking results it is recommended
to replace the <code>" #Q"</code> string with <code>" \261\2"</code>.</p>
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<h2 id="primary-files">Primary files</h2>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1990/baruch/baruch.c">baruch.c</a> - entry source code</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1990/baruch/Makefile">Makefile</a> - entry Makefile</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1990/baruch/baruch.alt.c">baruch.alt.c</a> - alternate source code</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1990/baruch/baruch.orig.c">baruch.orig.c</a> - original source code</li>
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1990/baruch/try.sh">try.sh</a> - script to try entry</li>
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<li><a href="1990_baruch.tar.bz2">1990_baruch.tar.bz2</a> - download entry tarball</li>
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<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1990/baruch/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
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