punt.cpp

class Punkt
{
   public:
      // Overload + operator to add two Punkt objects.
      Punkt operator+(const Punkt& p)
      {
         Punkt new_p;
         new_p.x = x + p.x;
         new_p.y = y + p.y;
         return new_p;
      }
   private:
      double x;
      double y;
};