用VC写的一个根据输入的数学表达式字符串求出结果，将后缀转为中缀，类似一个计算器，唯一遗憾的是只是整形之间的+—*/。-VC was based on the importation of a mathematical expression string of results obtained, which is made up to the suffix similar to a calculator, the only regret is the only plastic -* /.