Overloading the Comma Operator : overload comma operator « Operator Overloading « C++ Tutorial

1. C++ Tutorial
2. Operator Overloading
3. overload comma operator

#include <iostream>
using namespace std;
   
class loc {
  int longitude, latitude;
public:
  loc() {}
  loc(int lg, int lt) {
    longitude = lg;
    latitude = lt;
  }
   
  void show() {
    cout << longitude << " ";
    cout << latitude << "\n";
  }
   
  loc operator+(loc op2);
  loc operator,(loc op2);
};
   
// overload comma for loc
loc loc::operator,(loc op2)
{
  loc temp;
   
  temp.longitude = op2.longitude;
  temp.latitude = op2.latitude;
  cout << op2.longitude << " " << op2.latitude << "\n";
   
  return temp;
}
   
// Overload + for loc
loc loc::operator+(loc op2)
{
  loc temp;
   
  temp.longitude = op2.longitude + longitude;
  temp.latitude = op2.latitude + latitude;
   
  return temp;
}
   
int main()
{
  loc ob1(10, 20), ob2( 5, 30), ob3(1, 1);
   
  ob1.show();
  ob2.show();
  ob3.show();
  cout << "\n";
   
  ob1 = (ob1, ob2+ob2, ob3);
   
  ob1.show(); // displays 1 1, the value of ob3
   
  return 0;
}