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Next: <a href="wcsncpy.html#wcsncpy" accesskey="n" rel="next">wcsncpy</a>, Previous: <a href="wcsncat.html#wcsncat" accesskey="p" rel="prev">wcsncat</a>, Up: <a href="Wchar-strings.html#Wchar-strings" accesskey="u" rel="up">Wchar 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="wcsncmp_002d_002d_002dcompare-part-of-two-wide_002dcharacter-strings"></a>
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<h3 class="section">6.19 <code>wcsncmp</code>—compare part of two wide-character strings</h3>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <wchar.h>
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int wcsncmp(const wchar_t *<var>s1</var>, const wchar_t *<var>s2</var>, size_t <var>n</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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The <code>wcsncmp</code> function compares not more than <var>n</var> wide-character
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codes (wide-character codes that follow a null wide-character code are
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not compared) from the array pointed to by <var>s1</var> to the array pointed
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to by <var>s2</var>.
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</p>
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<p>The sign of a non-zero return value is determined by the sign of the
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difference between the values of the first pair of wide-character codes
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that differ in the objects being compared.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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Upon successful completion, <code>wcsncmp</code> returns an integer greater than,
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equal to or less than 0, if the possibly null-terminated array pointed
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to by <var>s1</var> is greater than, equal to or less than the possibly
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null-terminated array pointed to by <var>s2</var> respectively.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>wcsncmp</code> is ISO/IEC 9899/AMD1:1995 (ISO C).
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</p>
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<p>No supporting OS subroutines are required.
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