a></span>&#160;    <a class="code" href="class_stack.html#ab034b819e2382f80d952cf8527dc6e6c">Stack</a>(): top(-1)</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    {</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    }</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment">/** Put an item on the stack.</