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<a name="memccpy_002d_002d_002dcopy-memory-regions-with-end_002dtoken-check"></a>
<h3 class="section">5.5 <code>memccpy</code>&mdash;copy memory regions with end-token check</h3>
<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;string.h&gt;
void* memccpy(void *restrict <var>out</var>, const void *restrict <var>in</var>, 
    int <var>endchar</var>, size_t <var>n</var>);

</pre></div>
<p><strong>Description</strong><br>
This function copies up to <var>n</var> bytes from the memory region
pointed to by <var>in</var> to the memory region pointed to by
<var>out</var>.  If a byte matching the <var>endchar</var> is encountered,
the byte is copied and copying stops.
</p>
<p>If the regions overlap, the behavior is undefined.
</p>
<br>
<p><strong>Returns</strong><br>
<code>memccpy</code> returns a pointer to the first byte following the
<var>endchar</var> in the <var>out</var> region.  If no byte matching
<var>endchar</var> was copied, then <code>NULL</code> is returned.
</p>
<br>
<p><strong>Portability</strong><br>
<code>memccpy</code> is a GNU extension.
</p>
<p><code>memccpy</code> requires no supporting OS subroutines.
</p>

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