constructor.cpp

#include <iostream>
using namespace std;
class Rectangle
{
public:
  int l;
  int b;

  Rectangle()
  { // default constructor - no args passed
    l = 0;
    b = 0;
  }
  Rectangle(int x, int y)
  { // parameterized constructor - args passed
    l = x;
    b = y;
  }
  Rectangle(Rectangle &r)
  { // copy constructor - initialise an obj by another existing obj
    l = r.l;
    b = r.b;
  }
  ~Rectangle()
  { // Destructor
    cout << "Destructor is called";
  }
};

int main()
{
  Rectangle *r0 = new Rectangle();
  cout << r0->l << " " << r0->b << endl;
  delete r0;
  Rectangle r1;
  cout << r1.l << " " << r1.b << endl;
  Rectangle r2(3, 4);
  cout << r2.l << " " << r2.b << endl;
  Rectangle r3 = r2;
  cout << r3.l << " " << r3.b << endl;

  return 0;
}