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<h3 class="section">3.16 <code>iswalpha</code>&mdash;alphabetic wide character test</h3>
<p><a name="index-iswalpha-128"></a><strong>Synopsis</strong>
<pre class="example"> #include &lt;wctype.h&gt;
int iswalpha(wint_t <var>c</var>);
</pre>
<p><strong>Description</strong><br>
<code>iswalpha</code> is a function which classifies wide-character values that
are alphabetic.
<p><br>
<strong>Returns</strong><br>
<code>iswalpha</code> returns non-zero if <var>c</var> is an alphabetic wide character.
<p><br>
<strong>Portability</strong><br>
<code>iswalpha</code> is C99.
<p>No supporting OS subroutines are required.
<p><br>
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