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/* -*- mode::rust;indent-tabs-mode::nil -*-
* Implementation of 99 Bottles of Beer
* http://99-bottles-of-beer.net/
*/
use std;
import std::_int;
import std::_str;
fn main() {
fn multiple(int n) {
let str nb = _int::to_str(n, 10u);
let str mb = _int::to_str(n - 1, 10u);
log nb + " bottles of beer on the wall, " + nb + " bottles of beer,";
log "Take one down and pass it around, "
+ mb + " bottles of beer on the wall.";
log "";
if (n > 3) {
be multiple(n - 1);
}
else {
be dual();
}
}
fn dual() {
log "2 bottles of beer on the wall, 2 bottles of beer,";
log "Take one down and pass it around, 1 bottle of beer on the wall.";
log "";
be single();
}
fn single() {
log "1 bottle of beer on the wall, 1 bottle of beer,";
log "Take one down and pass it around, "
+ "no more bottles of beer on the wall.";
log "";
be none();
}
fn none() {
log "No more bottles of beer on the wall, no more bottles of beer,";
log "Go to the store and buy some more, 99 bottles of beer on the wall.";
log "";
}
multiple(99);
}
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