多功能计算软件程序清单

功能要求：具备整型数据、浮点型数据的算术（加、减、乘、除）运算功能。

依次输入运算符（+，-，*，/）、第一个运算数、第二个运算数，然后输出结果，

当用户输入 Q 则退出系统，否则允许用户连续进行运算。-Multi-function calculation software program list functional requirements: with integer data, floating-point data arithmetic (add, subtract, multiply, divide) operator function. Followed by enter operator (+,-,*,/), the first operand, the second operand, and then output the result, when the user enters ' Q'　then exit the system, or allows the user to continuous operation.