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<a name="strncat_002d_002d_002dconcatenate-strings"></a>
<h3 class="section">5.32 <code>strncat</code>&mdash;concatenate strings</h3>
<a name="index-strncat"></a>
<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;string.h&gt;
char *strncat(char *restrict <var>dst</var>, const char *restrict <var>src</var>,
    size_t <var>length</var>);

</pre></div>
<p><strong>Description</strong><br>
<code>strncat</code> appends not more than <var>length</var> characters from
the string pointed to by <var>src</var> (including the	terminating
null character) to the end of the string pointed to by
<var>dst</var>.  The initial character of <var>src</var> overwrites the null
character at the end of <var>dst</var>.  A terminating null character
is always appended to the result
</p>
<br>
<p><strong>Warnings</strong><br>
Note that a null is always appended, so that if the copy is
limited by the <var>length</var> argument, the number of characters
appended to <var>dst</var> is <code>n + 1</code>.
</p>
<br>
<p><strong>Returns</strong><br>
This function returns the initial value of <var>dst</var>
</p>
<br>
<p><strong>Portability</strong><br>
<code>strncat</code> is ANSI C.
</p>
<p><code>strncat</code> requires no supporting OS subroutines.
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