一个采用逆波兰式计算表达式结果的程序，程序简单精巧，注释清楚。程序使用双栈结构，最后结果输出逆波兰式及计算结果-A calculated expression using reverse the results of the Polish program, the program simple and delicate, clear notes. Program uses the dual-stack structure, the final result against Poland, and