/span>
                                    <span class="keyword">return</span> <span class="identifier">sum</span> <span class="special">+</span> <span class="identifier">x</span><span class="special">[</span><span class="number">0</span><span class="special">];</span> <span class="special">}</span> <span class="special">);</span>
<span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">res</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl<