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<title>Bison 3.0.4: Rpcalc Compile</title>

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<a name="Rpcalc-Compile"></a>
<div class="header">
<p>
Previous: <a href="Rpcalc-Generate.html#Rpcalc-Generate" accesskey="p" rel="prev">Rpcalc Generate</a>, Up: <a href="RPN-Calc.html#RPN-Calc" accesskey="u" rel="up">RPN Calc</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index-of-Terms.html#Index-of-Terms" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Compiling-the-Parser-Implementation-File"></a>
<h4 class="subsection">2.1.7 Compiling the Parser Implementation File</h4>
<a name="index-compiling-the-parser"></a>

<p>Here is how to compile and run the parser implementation file:
</p>
<div class="example">
<pre class="example"># <span class="roman">List files in current directory.</span>
$ <kbd>ls</kbd>
rpcalc.tab.c  rpcalc.y
</pre><pre class="example">
</pre><pre class="example"># <span class="roman">Compile the Bison parser.</span>
# <span class="roman">&lsquo;<samp>-lm</samp>&rsquo; tells compiler to search math library for <code>pow</code>.</span>
$ <kbd>cc -lm -o rpcalc rpcalc.tab.c</kbd>
</pre><pre class="example">
</pre><pre class="example"># <span class="roman">List files again.</span>
$ <kbd>ls</kbd>
rpcalc  rpcalc.tab.c  rpcalc.y
</pre></div>

<p>The file <samp>rpcalc</samp> now contains the executable code.  Here is an
example session using <code>rpcalc</code>.
</p>
<div class="example">
<pre class="example">$ <kbd>rpcalc</kbd>
<kbd>4 9 +</kbd>
&rArr; 13
<kbd>3 7 + 3 4 5 *+-</kbd>
&rArr; -13
<kbd>3 7 + 3 4 5 * + - n</kbd>              <span class="roman">Note the unary minus, &lsquo;<samp>n</samp>&rsquo;</span>
&rArr; 13
<kbd>5 6 / 4 n +</kbd>
&rArr; -3.166666667
<kbd>3 4 ^</kbd>                            <span class="roman">Exponentiation</span>
&rArr; 81
<kbd>^D</kbd>                               <span class="roman">End-of-file indicator</span>
$
</pre></div>




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