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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>strncat</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="The Linux Kernel API" /><link rel="up" href="ch02s02.html" title="String Manipulation" /><link rel="prev" href="re62.html" title="strcat" /><link rel="next" href="re64.html" title="strlcat" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>strncat</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re62.html">Prev</a> </td><th width="60%" align="center">String Manipulation</th><td width="20%" align="right"> <a accesskey="n" href="re64.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="strncat"><a id="API-strncat"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>strncat —
Append a length-limited, <code class="constant">NUL-terminated</code> string to another
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">char * <b class="fsfunc">strncat </b>(</code></td><td>char * <var class="pdparam">dest</var>, </td></tr><tr><td> </td><td>const char * <var class="pdparam">src</var>, </td></tr><tr><td> </td><td>size_t <var class="pdparam">count</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2957420"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>dest</code></em></span></dt><dd><p>
The string to be appended to
</p></dd><dt><span class="term"><em class="parameter"><code>src</code></em></span></dt><dd><p>
The string to append to it
</p></dd><dt><span class="term"><em class="parameter"><code>count</code></em></span></dt><dd><p>
The maximum numbers of bytes to copy
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2957479"></a><h2>Description</h2><p>
Note that in contrast to <code class="function">strncpy</code>, <code class="function">strncat</code> ensures the result is
terminated.
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