自己用VB写的逆波兰表达式算法，包括中缀表达式转换到后缀表达式，后缀表达式的计算，在模块reversePoland.bas中，都已经写成了函数。-This code source written with visual basic is a realization of reversepoland algorithm.The transformation to suffix expression is expected in the file reversePoland.bas. In addt