let fib(n: i32): i32 =
if n <= 1 { n }
else { fib(n - 1) + fib(n - 2) }
let a(): i32 = 0
declare printf(s: cstring, ...): void
let main(): i32 = {
let x = a()
for var i: i32 = x; i < 40; i += 1 {
printf("fib(%d) = %d\n", i, fib(i))
}
return 0
}