1.  
  2. #include <stdio.h>
  3.  
  4. int main(int argv, char** argc) {
  5.   int i = 999;
  6.   int x = &&X;
  7.   int y = &&Y;
  8.   int d = x-y;
  9.  X:printf("%d\n", 999-i);
  10.   goto *((i-->0) * d+y);
  11.  Y: return 0;
  12. }