span class="identifier">in_range</span><span class="special">(</span><span class="identifier">char_type</span> first<span class="special">,</span> <span class="identifier">char_type</span> last<span class="special">,</span> <span class="identifier">char_type</span> ch<span class="special">)</span><span class="special">;</span></pre>
<p>Checks to see if a character is within a character range.</p>
<p>

</p>
<div class="variablelist"><table border="0" class="variablelist compact">
<colgroup>
<col align="left"