C++ 两数求和，很简单的，初学者看看

//THE PROGRAM IS TO DISPLAY A MULDERIV CLASS //FILE MULDERIV.CPP #include <stdio.h> #include <conio.h> #include <stdlib.h> class CLASS_A { protected: int NUM_A; public: void READ_NUM() { printf("Input a number please(NUM_A):"); scanf("%d",&NUM_A); } }; class CLASS_B { protected: int NUM_B; public: void READ_NUM() { printf("Input a number please(NUM_B):"); scanf("%d",&NUM_B); } }; class CLASS_SUM:public CLASS_A,public CLASS_B { private: int SUM; public: void MAKE_SUM() { SUM=NUM_A+NUM_B; } int GET_SUM() { return SUM; } }; int main(void) { CLASS_SUM SUM; system("cls"); SUM.CLASS_A::READ_NUM(); SUM.CLASS_B::READ_NUM(); SUM.MAKE_SUM(); printf("- - - The SUM is: %d - - -",SUM.GET_SUM()); getch(); return 0; };