// overloading operators example

#include <iostream>
using namespace std;

class Vector {
  public:
    int x,y;
    Vector () {};
    Vector (int,int);
    Vector operator + (Vector);
};

Vector::Vector (int a, int b) {
  x = a;
  y = b;
}

// To overload an operator in order to use it with classes we declare operator
// functions, which are regular functions whose names are the operator keyword
// followed by the operator sign that we want to overload.

Vector Vector::operator+ (Vector param) {
  Vector temp;
  temp.x = x + param.x;
  temp.y = y + param.y;
  return (temp);
}

int main () {
  Vector a (3,1);
  Vector b (1,2);
  Vector c;
  c = a + b;
  cout << c.x << "," << c.y;
  getchar();
  
  return 0;
}