实现计算器功能 首先是输出计算器图形样式 然后是通过按键的方式实现数值运算所以程序主要由两大部分实现 一部分功能是显示计算器 一部分是实现计算功能 显示计算器是在屏幕上显示图形 Turbo C提供了PC系统环境下扩充的屏幕和图形支持系统利用此系统提供的字符屏幕处理函数和图形系统的有关信息及函数即可很好地实现 计算功能主要要解决的是接收按键信息的处理 要进行识别 如果按键是数字符号 要将其转变为操作数 如果是运算操作符 则进行相应的处理-The realization of the calculator function is the first output calculator graphics style and then through the way of the key to achieve numerical computing

So the program mainly　the two parts to achieve a part of the function is to display a part of the calculator function is to achieve the display

The calculator is on the screen display graphics C PC provides the Turbo system environment under the expansion of the screen and graphics support system

By using this system, the information and function of the character screen processing function and the graphics system can be well realized.

Function is mainly to solve the process of receiving key information to identify if the button is the number of symbols to be transferred

If the operand is the operator, the corresponding processing is performed.