list-functions.c - Funktionen append.

Lektion 9 - slide 22 : 29 Program 2

/* Append list1 and list2. The elements in list2 are shared between
   the appended list and list2 */
cons_cell *append(cons_cell *list1, cons_cell *list2){
  if (list1 == NULL)
    return list2;
  else return cons(head(list1),
                   append(tail(list1),list2));
}