FriendFunction2.cpp

//friend function in two class

#include<iostream.h>
class B;
class A{
	private:
		int a;
	public:
		void setdata(int x){
			a=x;
		}
		friend void fun(A,B);
};

class B{
	private:
		int b;
	public:
		void setdata(int y){
			b=y;
		}
		friend void fun(A,B);
};

void fun(A o1,B o2){
	cout<<"sum is "<<o1.a+o2.b;
}

int main(){
	A obj1;
	B obj2;
	obj1.setdata(2);
	obj1.setdata(3);
	fun(obj1,obj2);
	return 0;
}