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94 lines
3.7 KiB
HTML
94 lines
3.7 KiB
HTML
4 years ago
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<title>strcasecmp (The Red Hat newlib C Library)</title>
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<link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<body lang="en">
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<a name="strcasecmp"></a>
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<div class="header">
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<p>
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Next: <a href="strcasestr.html#strcasestr" accesskey="n" rel="next">strcasestr</a>, Previous: <a href="stpncpy.html#stpncpy" accesskey="p" rel="prev">stpncpy</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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</div>
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<hr>
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<a name="strcasecmp_002d_002d_002dcase_002dinsensitive-character-string-compare"></a>
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<h3 class="section">5.18 <code>strcasecmp</code>—case-insensitive character string compare</h3>
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<a name="index-strcasecmp"></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 <strings.h>
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int strcasecmp(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>strcasecmp</code> compares the string at <var>a</var> to
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the string at <var>b</var> in a case-insensitive manner.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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</p>
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<p>If <code>*<var>a</var></code> sorts lexicographically after <code>*<var>b</var></code> (after
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both are converted to lowercase), <code>strcasecmp</code> returns a
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number greater than zero. If the two strings match,
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<code>strcasecmp</code> returns zero. If <code>*<var>a</var></code> sorts
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lexicographically before <code>*<var>b</var></code>, <code>strcasecmp</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>strcasecmp</code> is in the Berkeley Software Distribution.
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</p>
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<p><code>strcasecmp</code> requires no supporting OS subroutines. It uses
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tolower() from elsewhere in this library.
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</p>
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