友元函数(二)

最新推荐文章于 2025-03-10 20:47:07 发布

todhacker111

最新推荐文章于 2025-03-10 20:47:07 发布

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文章标签： class include

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#include <iostream> using namespace std; class A { private: int x,y; public: A(int i,int j) {x=i;y=j;} int getX() {return x;} int getY() {return y;} friend class B; }; class B { private: int z; public: int add(A a) {return a.x+a.y+z;} int mul(A a) {return a.x*a.y*z;} B(int i=0) {z=i;} }; void main() { A a(2,3); B b(4); cout<<b.add(a)<<endl; cout<<b.mul(a)<<endl; }