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29<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">phoenix</span><span class="special">/</span><span class="identifier">statement</span><span class="special">/</span><span class="keyword">if</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
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31<p>
32          We have seen the <code class="computeroutput"><span class="identifier">if_</span></code> statement.
33          The syntax is:
34        </p>
35<pre class="programlisting"><span class="identifier">if_</span><span class="special">(</span><span class="identifier">conditional_expression</span><span class="special">)</span>
36<span class="special">[</span>
37    <span class="identifier">sequenced_statements</span>
38<span class="special">]</span>
39</pre>
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43<td align="right"><div class="copyright-footer">Copyright &#169; 2002-2005, 2010 Joel de Guzman, Dan Marsden, Thomas Heller<p>
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