一个计算器程序，利用了编译原理的知识，可以用来作为一个例子，学习编译原理-a calculator procedure, and use of compiler theory of knowledge, could be used as an example to study compiler theory

一个计算器程序，利用了编译原理的知识，可以用来作为一个例子，学习编译原理-a calculator procedure, and use of compiler theory of knowledge, could be used as an example to study compiler theory