Introduction - If you have any usage issues, please Google them yourself
Visual c++ the mfc programming. Simple calculator. You can achieve the basic functions. Special Note: 1, the number keys are calling PutIntoNum (int n), appending a number to the current operation and displays 2 defines the type of enum eum_signl used to store the operator clicks, click the operator call RunOperation (enum eum_signl e_signl ) for computing and 3, defined by the implementation of the equal sign and percent last operator eum_signl en_LastSignl storage, and then called in the equal sign, percent sign RunOperation (enum eum_signl e_signl) is calculated, the percent sign is a little special only displayed as a percentage, but does not change the actual operand, 4, unary nothing to say, are operating current operand