Java编写的简易图形计算器，能够进行简单的加减乘除计算-Java to prepare simple graphing calculator, to carry out simple addition and subtraction, multiplication and division calculation

　用C#写的比较基础的windows Form 程序,该计算器实现了基础的数学运算,如加,减,乘,除等任务.主要是通过该程序学习vs.net的 　　编程环境,以及windows Form程序.主要针对初学者-Comparison with C# to write programs based on windows Form, which implements the basic math calculator operations such as addition, subtracti