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Next: <a href="iswcntrl.html#iswcntrl" accesskey="n" rel="next">iswcntrl</a>, Previous: <a href="iswalnum.html#iswalnum" accesskey="p" rel="prev">iswalnum</a>, Up: <a href="Ctype.html#Ctype" accesskey="u" rel="up">Ctype</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="iswalpha_002d_002d_002dalphabetic-wide-character-test"></a>
<h3 class="section">3.16 <code>iswalpha</code>—alphabetic wide character test</h3>
<a name="index-iswalpha"></a>
<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include <wctype.h>
int iswalpha(wint_t <var>c</var>);
</pre></div>
<p><strong>Description</strong><br>
<code>iswalpha</code> is a function which classifies wide-character values that
are alphabetic.
</p>
<br>
<p><strong>Returns</strong><br>
<code>iswalpha</code> returns non-zero if <var>c</var> is an alphabetic wide character.
</p>
<br>
<p><strong>Portability</strong><br>
<code>iswalpha</code> is C99.
</p>
<p>No supporting OS subroutines are required.
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