operator Overloading in C++ Example Question for Quiz and solution

1.  Overload the ‘+’ and ‘-’ operator in this class that by using these operators one should be able to add and subtract the three integers using two objects of this class?

class Nums

{

private:

            int x,y,z;

public:

            Nums (int,int,int);

            Nums ();

            Nums operator+ (const Nums& n1, const Nums& n2);

            Nums operator-(const Nums& n1, const Nums& n2);

                                               

};

Solution:

Nums operator +(const Nums& n1, const Nums& n2)  //Addition

{

          Nums res;

          res.x = n1.x + n2.x;

          res.y = n1.y + n2.y;

          res.z = n1.z + n2.z;

          return res;

}

Nums operator -(const Nums& n1, const Nums& n2) //Subtraction

{

          Nums res;

          res.x = n1.x - n2.x;

          res.y = n1.y - n2.y;

          res.z = n1.z - n2.z;

          return res;

}