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<h2><a name="reserve" id="reserve">reserve</a></h2>
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<p>
Syntax:
</p>
<pre class="c code c++" style="font-family:monospace;">    <span class="co2">#include &lt;string&gt;</span>
    <span class="kw4">void</span> reserve<span class="br0">&#40;</span> size_type size <span class="sy0">=</span> 0 <span class="br0">&#41;</span><span class="sy0">;</span></pre>
<p>

The reserve() function sets the capacity of the string to at least size.
If the argument <code>size</code> is less than the current number of characters (i.e. <code>size &lt; this→size()</code>), it is a nonbinding shrink-to-fit request.
reserve() runs in <a href="../complexity.html" class="wikilink1" title="complexity">linear time</a>.
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Related Topics: <a href="../string/capacity.html" class="wikilink1" title="string:capacity">capacity</a>, <a href="../string/resize.html" class="wikilink1" title="string:resize">resize</a>
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