struct mystruct 
{
public:
	int x, y ;
	int * xptr, yptr ;
	mystruct () 
	{ 
		xptr = & x ; 
		yptr = & y ; 
	}
} ;

int main ( void )
{
	mystruct a ;
	mystruct * aptr = & a ;

	a . x = 1 ; 
	a . y = 2 ;

	a .* xptr = 3 ;
	a .* yptr = 4 ;

	aptr ->* xptr = 5 ;
	aptr ->* yptr = 6 ;
}