</span></code>
                  </p>
                </td>
<td>
<pre class="programlisting"><span class="special">{</span>
  <span class="identifier">Distance</span> <span class="identifier">m</span> <span class="special">=</span> <span class="identifier">n</span><span class="special">;</span>
  <span class="keyword">if</span> <span class="special">(</span><span class="identifier">m</span> <span class="special">&gt;=</span> <span class="number">0</span><span class="special">)</span>
    <span class="keywor