Basic Program for Copy Constructor in C++

#include<iostream.h>

#include<conio.h>

class CRectangle 

{

    int width, height;

  public:

    void set_values (int, int);

    int area (void) {return (width * height);}

};

void CRectangle::set_values (int a, int b) {

  width = a;

  height = b;

}

int main () 

{

  CRectangle a, *b, *c;

  CRectangle * d = new CRectangle[2];

  b= new CRectangle;

  c= &a;

  a.set_values (1,2);

  b->set_values (3,4);

  d->set_values (5,6);

  d[1].set_values (7,8);

  cout << "a area: " << a.area() << endl;

  cout << "*b area: " << b->area() << endl;

  cout << "*c area: " << c->area() << endl;

  cout << "d[0] area: " << d[0].area() << endl;

  cout << "d[1] area: " << d[1].area() << endl;

  getch();

  return 0;

}