实现编译原理中的算符优先算法，输出算法实现中的各阶段的数据-Principle of the operator to achieve compile priority algorithm, the output algorithm in the various stages of data

C#写的简单计算器，支持算符优先和普通算法。可在主菜单切换运算模式-C# to write a simple calculator, support for operator precedence and the general algorithm. Operations in the main menu to switch modes