6>
<a name="geometry.reference.algorithms.within.within_2.h10"></a>
            <span><a name="geometry.reference.algorithms.within.within_2.example"></a></span><a class="link" href="within_2.html#geometry.reference.algorithms.within.within_2.example">Example</a>
          </h6>
<p>
            Shows how to detect if a point is inside a polygon, or not
          </p>
<p>
</p>
<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">iost