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Next: <a href="strcoll.html#strcoll" accesskey="n" rel="next">strcoll</a>, Previous: <a href="strchrnul.html#strchrnul" accesskey="p" rel="prev">strchrnul</a>, Up: <a href="Strings.html#Strings" accesskey="u" rel="up">Strings</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<a name="strcmp_002d_002d_002dcharacter-string-compare"></a>
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<h3 class="section">5.23 <code>strcmp</code>—character string compare</h3>
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<a name="index-strcmp"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <string.h>
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int strcmp(const char *<var>a</var>, const char *<var>b</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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<code>strcmp</code> compares the string at <var>a</var> to
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the string at <var>b</var>.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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If <code>*<var>a</var></code> sorts lexicographically after <code>*<var>b</var></code>,
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<code>strcmp</code> returns a number greater than zero. If the two
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strings match, <code>strcmp</code> returns zero. If <code>*<var>a</var></code>
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sorts lexicographically before <code>*<var>b</var></code>, <code>strcmp</code> returns a
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number less than zero.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>strcmp</code> is ANSI C.
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</p>
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<p><code>strcmp</code> requires no supporting OS subroutines.
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