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KAZUHO / cppref-0.09 / doc / c / string / isxdigit.html 
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    isxdigit    [C++ Reference]
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<h2><a name="isxdigit" id="isxdigit">isxdigit</a></h2>
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<p>
Syntax:
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<pre class="c code c++" style="font-family:monospace;">    <span class="co2">#include &lt;cctype&gt;</span>
    <span class="kw4">int</span> isxdigit<span class="br0">&#40;</span> <span class="kw4">int</span> ch <span class="br0">&#41;</span><span class="sy0">;</span></pre>
<p>

The function isxdigit() returns non-zero if its argument is a hexadecimal digit
(i.e. A-F, a-f, or 0-9). Otherwise, zero is returned.
</p>

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Related Topics: <a href="../../c/string/isalnum.html" class="wikilink1" title="c:string:isalnum">isalnum</a>, <a href="../../c/string/isalpha.html" class="wikilink1" title="c:string:isalpha">isalpha</a>, <a href="../../c/string/iscntrl.html" class="wikilink1" title="c:string:iscntrl">iscntrl</a>, <a href="../../c/string/isdigit.html" class="wikilink1" title="c:string:isdigit">isdigit</a>, <a href="../../c/string/isgraph.html" class="wikilink1" title="c:string:isgraph">isgraph</a>, <a href="../../c/string/ispunct.html" class="wikilink1" title="c:string:ispunct">ispunct</a>, <a href="../../c/string/isspace.html" class="wikilink1" title="c:string:isspace">isspace</a>
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