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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// -*- rust -*-
fn f(x: int) -> int {
// debug!("in f:");
log(debug, x);
if x == 1 {
// debug!("bottoming out");
return 1;
} else {
// debug!("recurring");
let y: int = x * f(x - 1);
// debug!("returned");
log(debug, y);
return y;
}
}
fn main() {
assert (f(5) == 120);
// debug!("all done");
}
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