src/test/ui/fact.rs

   1 // run-pass
   2
   3 fn f(x: isize) -> isize {
   4     // println!("in f:");
   5
   6     println!("{}", x);
   7     if x == 1 {
   8         // println!("bottoming out");
   9
  10         return 1;
  11     } else {
  12         // println!("recurring");
  13
  14         let y: isize = x * f(x - 1);
  15         // println!("returned");
  16
  17         println!("{}", y);
  18         return y;
  19     }
  20 }
  21
  22 pub fn main() {
  23     assert_eq!(f(5), 120);
  24     // println!("all done");
  25
  26 }