利用VC++编写的科学计算器。可进行加减乘除、乘方、开方、三角函数等混合运算。利用MFC，具有良好的交互界面，可一次性将运算时输入并运算-Written by vc++ scientific calculator. Can add, subtract, multiply and divide, chengfang, root, triangle function of mixed operation. Using MFC, have good interface, can be single i