class bar
{
public:
	bar(int* z)
	{
		ptr = z;
	}
	int* ptr;
	void change()
	{
		*ptr = *ptr + 1;
	}
};
class foo
{
public:
	int x;
	bar* b;
	foo()
	{
		x=10;
		b = new bar(&x);
	}
};
int main()
{
	foo a;
	(a.b)->change();
	printf("%d\n",a.x);
	return 0;
}