/* Same as that in ppt */
struct st
 {
  int *f;
  int  g;
 };

 main ()
  {
   struct st x, *p;
   int z, u, *r, *y;

   z = 0;
   p = &x;
   p->f = &z;
   r = &u;
   y = r;
  /* z = *r; */
  }
