dentifier>global_fun</span><span class=special>.</span><span class=identifier>hpp</span><span class=special>&gt;</span>

<span class=keyword>struct</span> <span class=identifier>rectangle</span>
<span class=special>{</span>
  <span class=keyword>int</span> <span class=identifier>x0</span><span class=special>,</span><span class=identifier>y0</span><span class=special>;</span>
  <span class=keyword>int</span> <span class=identifier>x1</span><span class=special>,</span><span class=identifier>y1</span><span cla