99 Bottles of Beer

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/*******************************************************
 * 99 Bottles of Beer
 * Paul J. DeMarco  9/20/2002
 * beer.pro
 * To execute start gprolog (others may work)
 * consult('beer.pro').
 * drink(beer,99).
 *******************************************************/
english(beer,0):-
                        write('no more bottle of beer').
english(beer,1):-
                        write('1 bottle of beer').
english(beer,X):-
                        X >= 2,
                        write( X ) ,
                        write(' bottles of beer').
 
drink(beer,X):- X >= 1,
                        english(beer,X),
                        write(' on the wall, '),
                        english(beer,X),
                        write(', take one down, pass it around\n'),
                        X1 is X - 1,
                        english(beer,X1),
                        write(' on the wall.\n'),
                        drink(beer, X1).

Alternative Versions

Comments

 Frederic said on 08/21/06 19:01:48

This is exactly what I was looking for. Works perfectly.

 Steve Smart said on 10/16/06 00:57:58

Brilliant!

 Braam said on 01/24/08 15:32:30

Brilliant? because its writing it 99 times?
This is not even a Full lyrics version!..Far from brylliant!

 Tristan said on 01/28/08 09:20:51

LOL
this code is shorter than short

 mozzy said on 11/25/08 21:11:47

Works with SWI-Prolog as well.

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