">{</span>
  <span class="keyword">int</span> <span class="identifier">level</span><span class="special">;</span>
  <span class="keyword">void</span> <span class="identifier">optimization_level</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">l</span><span class="special">)</span> <span class="special">{</span> <span class="identifier">level</span> <span class="special">=</span> <span class="identifier">l</span><span class="special">;</span> <span class="special"