说明： c实现的四元式，模拟编译原理来实现，程序本身没什么难度，不过写这种程序能进一步加深对编译原理的理解！ (c 4 yuan to achieve the style, analog compiler principles to achieve, the process itself little more difficult, but to write such a procedure would further deepen the understanding of compiler theory!)
好评：
