Explain the main difference between a default constructor and a copy constructor. If we are working with class X, show the prototypes for both the default constructor and copy constructor. code example

// Copy constructor 
    Point(const Point &p2) {x = p2.x; y = p2.y; } 
  
    int getX()            {  return x; } 
    int getY()            {  return y; } 
};