n><span class="identifier">x</span><span class="special">;</span>
    <span class="keyword">if</span> <span class="special">(</span> <span class="identifier">idx</span> <span class="special">&lt;</span> <span class="identifier">size</span><span class="special">)</span> <span class="special">{</span>
        <span class="keyword">int</span> <span class="identifier">idx1</span> <span class="special">=</span> <span class="special">(</span><span class="identifier">idx</span> <span class="special">+</span> <span