| //@ run-pass | |
| fn f(x: isize) -> isize { | |
| // println!("in f:"); | |
| println!("{}", x); | |
| if x == 1 { | |
| // println!("bottoming out"); | |
| return 1; | |
| } else { | |
| // println!("recurring"); | |
| let y: isize = x * f(x - 1); | |
| // println!("returned"); | |
| println!("{}", y); | |
| return y; | |
| } | |
| } | |
| pub fn main() { | |
| assert_eq!(f(5), 120); | |
| // println!("all done"); | |
| } |