友员函数 operator

#include <iostream>
using namespace std;

class F{
	int a; //分子
	int b; //分母 
public:
	F(int a=0, int b=0):a(a),b(b)
	{
		
	}
	void show()
	{
		cout << a << '/' << b <<  endl;
	}
	F operator*(const F& o)const
	{
		return F(a*o.a, b*o.b);
	}
	friend F operator/(const F& f1, const F&f2);
};

F operator/(const F& f1, const F& f2)
{
	return F(f1.a*f2.b, f1.b*f2.a);
}

int main()
{
	F obj1(3,5);
	F obj2(5,8);
	F obj3, obj4, obj5;
/*	obj3 = obj1.operator*(obj2);
	obj3.show();
	obj4 = obj1 * obj2;
	obj4.show();*/
	obj5 = obj1 / obj2;
	obj5.show();
	
	return 0;
}