26 lines
731 B
Rust
26 lines
731 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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fn even(x: usize) -> bool {
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if x < 2 {
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return false;
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} else if x == 2 { return true; } else { return even(x - 2); }
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}
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fn foo(x: usize) {
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if even(x) {
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println!("{}", x);
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} else {
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panic!();
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}
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}
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pub fn main() { foo(2); }
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