gcc/testsuite/gcc.misc-tests/acker1.c

   1 int acker(int, int);
   2
   3 void main()
   4 {
   5     acker(3,6);
   6     /* */
   7     exit(0);
   8     /* */
   9 }
  10
  11 int
  12 acker(int x,int y)
  13 {
  14     if (x==0)
  15         return(y+1);
  16     else if (y==0)
  17         return(acker(x-1,1));
  18     else
  19         return(acker(x-1, acker(x, y-1)));
  20 }