// point.h - Playing with constructors, destructors, and having pointers.

#ifndef POINT_H_
#define POINT_H_

class Point 
{
  int x;
  int y;
  char *name;

public:

  Point(int n = 0): x(n), y(n), name(NULL){}   // Constructor

  Point(int a, int b, char * s): x(a), y(b)    // Constructor
  {
      name = new char[1+strlen(s)];
      strcpy (name, s);
  }  

  Point(Point& a)   // Copy constructor
  {
	x = a.x;
 	y = a.y;
	name = new char[1+strlen(a.name)];
	strcpy(name, a.name);
  }

  ~Point() // Destructor
  {
	delete [] name;
	cout << "I am the pitiless destructor\n";
  }

  Point& operator=(const Point& b) // Copy Assignment operator
  {
	x = b.x;
	y = b.y;
	if (name != NULL) {
		delete [] name;
	}
	name = new char[1+strlen(b.name)];
	strcpy(name, b.name);
	return *this;
  }

  friend ostream& operator<<(ostream& s, const Point& p) 
  {
	s << p.x << ' ' << p.y << ' ' << p.name;
        return s;
  }

  friend bool operator<(const Point& a, const Point& b) 
  {
	return ((a.x*a.x + a.y*a.y) < (b.x*b.x + b.y*b.y));
  }

  friend bool operator==(const Point& a, const Point& b) 
  {
	return ((a.x*a.x + a.y*a.y) == (b.x*b.x + b.y*b.y));
  }

};

// Sort the array a with n elements on basis of length of pointers
void sort(Point *a[], int n);

// Print content of an array a with n elements
void printPointArray(const Point * const a[], int n);

#endif