编程实现一个简易计算器，实现基本的加减乘除运算功能。在计算器的面板上，有0—9数字的按钮，同时还有加减乘除的运算按钮已经清空运算框按钮，用户可以直接点击

面板进行输入数字并计算。输入和输出结果数据共用一个文本框，同时，当进行除法运算时当除数为0，计算器会给出错误提示。

-Programming a simple calculator, to achieve the basic functions of addition and subtraction, multiplication and division operations. The panel in a calculator, a 0-9 digit buttons, along with multiplication and division addition and subtraction arithmetic operator button has been empty box button, the user can directly click on



Panel input and calculate figures. Data input and output share the same text box, at the same time, when computing the time for division when the divisor is 0, the calculator will give an error.