class="special">{</span>
        <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"error detected:"</span> <span class="special">&lt;&lt;</span> <span class="identifier">e</span><span class="special">.</span><span class="identifier">what</span><span class="special">(</span><span class="special">)</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span><span class="special">;</span>
    <span class="special"