#include<iostream.h>
class sample
{
		int n;
public:
//	int n;
	sample(){}
	   sample(int i){n=i;}
	  // sample square(sample){}
	   void display(){cout<<"n="<<n<<endl;}
	   
private:
};
//sample square(sample x)
//{
//	this -> n=x.n*x.n;
//	return (*this);
//}
void main()
{
	sample a(5),b;
	a.display();
//	b=square(a);
	b.display();
}