CS 211 - 3/1/13

BEWARE - using pass-by-address with show ()
  would destroy the linked list

void show (linkedPtr *hd)
{
 while (*hd != NULL)
   {
    printf ("%d, ", hd->elem);
    *hd = (*hd)->next;
   }
 printf ("\n");
}

show (&head)

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