fib.rs (161B)
1 fn fib(n: i32) -> i32 { 2 if n < 2 { 3 return n; 4 } 5 return fib(n - 1) + fib(n - 2); 6 } 7 8 fn main(){ 9 let val = fib(10); 10 println!("{val}"); 11 }