PRA_21

/* A program to overload binary operators using friend function */
#include<iostream>
using namespace std;
class Inr 
{
	float rs;
	public:
	void avail()
	{
		cout << "Enter available money :";
		cin >> rs;
	}
	void price()
	{
		cout << "Enter Item Price : ";
		cin >> rs;
	}
	void remain()
	{
		cout <<endl<< "You have only " << rs<<" INR"<<endl;
	}
	friend Inr operator-(Inr &,Inr &);//declaring friend function 
};
Inr operator-(Inr &a,Inr &b) // defining friend function to overload binary operator
{
	Inr c;
	c.rs = a.rs - b.rs; // calculating remaining money 
	return c;
}
int main()
{
	Inr avai,i_1,rema;
	cout << "\tREMAINING MONEY"<<endl<<endl;
	avai.avail();
	i_1.price();
	rema=avai-i_1;// overloading binary operator 
	
	rema.remain();
	return 0;
}
/*
Output:
        REMAINING MONEY

Enter available money :5555
Enter Item Price : 1224

You have only 4331 INR

--------------------------------
Process exited after 10.24 seconds with return value 0
Press any key to continue . . .
*/