| // Copyright 2014 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. |
| |
| macro_rules! prob1 { |
| (0) => { |
| 0 |
| }; |
| ($n:expr) => { |
| if ($n % 3 == 0) || ($n % 5 == 0) { |
| $n + prob1!($n - 1); //~ ERROR recursion limit reached while expanding the macro `prob1` |
| } else { |
| prob1!($n - 1); |
| } |
| }; |
| } |
| |
| fn main() { |
| println!("Problem 1: {}", prob1!(1000)); |
| } |
