gistfile1.txt

use io::ReaderUtil;
    
fn main() {
    io::println("What is your favorite number?");

    fn read_favorite_number() -> int {
        for io::stdin().each_line |line| {
            match int::from_str(line) {
                None => { io::println("That is not a number. :(\nTry again!"); }
                Some(number) => { return number; }
            }
        }

        fail ~"I just wanted a number...";
    }

    let my_favorite_number = read_favorite_number();

    io::println(fmt!("What? %d? That's my favorite too!", my_favorite_number));
}