cat =13 /*/ >/dev/null 2>&1; echo "Hello world."; exit
*
*  This program works under cc, f77, and /bin/sh.
*
*/; main() {
      write(
cat-~-cat
     /*,'(
*/
     ,"Hello world."
     ,
cat); putchar(~-~-~-cat); } /*
     ,)')
      end
*/