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