marzeq/qk revision: 9469f43

declare printf(s: cstring, ...): void

let fib(n: i32): i32 = 
  if n <= 1 { n }
  else { fib(n - 1) + fib(n - 2) }

let main() = {
  let a = fib(5)
  printf("a = %d\n", a)

  let b = &a

  var c = *b
  c = 0
  printf("a after = %d\n", a)
  return c
}