计算器——程序设计代码 程序功能简介：用户根据程序提示，输入实数，选择要进行的运算，可以进行加、减、乘、除、模运算和开平方等运算。

-　Calculator- Programming Code Program Features: user when the program prompts, enter a real number,　the operation to be performed, you can add, subtract, multiply, divide, and square root modulo arithmetic and other operations.