【开源】通过取函数指针来调用函数

阿杰

<p><font face="Verdana">//C++ 函数指针 参数<br/>#include &lt;iostream.h&gt;<br/>int add(int x, int y)<br/>{<br/>&nbsp; return x + y;<br/>}</font></p>
<p><font face="Verdana">void op(int(*p)(int, int), int x, int y)<br/>{<br/>&nbsp; cout &lt;&lt; p(x, y) &lt;&lt; endl;<br/>}</font></p>
<p><font face="Verdana">void main()<br/>{<br/>&nbsp; op(add, 5, 3);<br/>}</font></p><font face="Verdana">
<p><br/>#include &lt;iostream.h&gt;<br/>int add(int x, int y)<br/>{<br/>&nbsp; return x + y;<br/>}</p>
<p>int sub(int x, int y)<br/>{<br/>&nbsp; return x - y;<br/>}</p>
<p>void op(int(*p)(int, int), int x, int y)<br/>{<br/>&nbsp; cout &lt;&lt; p(x, y) &lt;&lt; endl;<br/>}</p>
<p>void main()<br/>{<br/>&nbsp; op(add, 5, 3);<br/>&nbsp; op(sub, 5, 3);<br/>}</font></p>