="preprocessor">#include &quot;<a class="code" href="wall_8hpp.html">wall.hpp</a>&quot;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacenetd