Overloading of Assignment Operator

//Overloading an assignment operator
#include<iostream.h>
#include<conio.h>
class sample
{
private:
 int x, y;
 public:
 void getdata ()
 {
  cout <<"\n enter the value of x and y";
  cin>> x>>y;
 }
 void operator = (sample obj)
 {
  x= obj.x;
  y= obj.y;
 }
 void display ()
 {
  cout<<"\n value of x="<<x;
  cout<<"\n value of y="<<y;
 }
};

void main ()
{
 clrscr();
 sample obj1, obj2;
 obj1.getdata ();
 obj1.display ();
 obj2=obj1;
 obj2.display();
 getch ();
}