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memchr [C++ Reference]
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<h2><a name="memchr" id="memchr">memchr</a></h2>
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<p>
Syntax:
</p>
<pre class="c code c++" style="font-family:monospace;"> <span class="co2">#include <cstring></span>
<span class="kw4">void</span> <span class="sy0">*</span>memchr<span class="br0">(</span> <span class="kw4">const</span> <span class="kw4">void</span> <span class="sy0">*</span>buffer<span class="sy0">,</span> <span class="kw4">int</span> ch<span class="sy0">,</span> size_t count <span class="br0">)</span><span class="sy0">;</span></pre>
<p>
The memchr() function looks for the first occurrence of ch within count
characters in the array pointed to by buffer. The return value points to the
location of the first occurrence of ch, or NULL if ch isn't found. For example:
</p>
<pre class="c code c++" style="font-family:monospace;"> <span class="kw4">char</span> names<span class="br0">[</span><span class="br0">]</span> <span class="sy0">=</span> <span class="st0">"Alan Bob Chris X Dave"</span><span class="sy0">;</span>
<span class="kw1">if</span><span class="br0">(</span> memchr<span class="br0">(</span>names<span class="sy0">,</span><span class="st0">'X'</span><span class="sy0">,</span>strlen<span class="br0">(</span>names<span class="br0">)</span><span class="br0">)</span> <span class="sy0">==</span> NULL <span class="br0">)</span>
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html"><span class="kw3">printf</span></a><span class="br0">(</span> <span class="st0">"Didn't find an X<span class="es1">\n</span>"</span> <span class="br0">)</span><span class="sy0">;</span>
<span class="kw1">else</span>
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html"><span class="kw3">printf</span></a><span class="br0">(</span> <span class="st0">"Found an X<span class="es1">\n</span>"</span> <span class="br0">)</span><span class="sy0">;</span></pre>
<p>
Related Topics: <a href="../../c/string/memcmp.html" class="wikilink1" title="c:string:memcmp">memcmp</a>, <a href="../../c/string/memcpy.html" class="wikilink1" title="c:string:memcpy">memcpy</a>, <a href="../../c/string/strstr.html" class="wikilink1" title="c:string:strstr">strstr</a>
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