本程序是一个简单的计算器，能够求加减乘除四则运算，此外还可以求绝对值，对数，正弦余弦值，还有正切余切值，对初学MFC的有帮助-This program is a simple calculator to find Math arithmetic, but can also order the absolute value, logarithmic, sine cosine, and tangent cotangent, the MFC help for beginners