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Revision 4601, 0.8 KB
(checked in by pmoura, 7 weeks ago)
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Added svn:mime-type property to source files (set to text/x-logtalk).
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Property svn:mime-type set to
text/x-logtalk
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Property svn:eol-style set to
native
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| 1 | /******************************************************* |
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| 2 | * 99 Bottles of Beer |
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| 3 | * Paulo Moura - January 21, 2007 |
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| 4 | * bottles.lgt |
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| 5 | * To execute start Logtalk and use the query |
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| 6 | * logtalk_load(bottles). |
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| 7 | *******************************************************/ |
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| 8 | |
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| 9 | :- object(bottles). |
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| 10 | |
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| 11 | :- initialization(sing(99)). |
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| 12 | |
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| 13 | sing(0) :- |
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| 14 | write('No more bottles of beer on the wall, no more bottles of beer.'), nl, |
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| 15 | write('Go to the store and buy some more, 99 bottles of beer on the wall.'), nl, nl. |
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| 16 | sing(N) :- |
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| 17 | N > 0, |
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| 18 | N2 is N -1, |
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| 19 | beers(N), write(' of beer on the wall, '), beers(N), write(' of beer.'), nl, |
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| 20 | write('Take one down and pass it around, '), beers(N2), write(' of beer on the wall.'), nl, nl, |
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| 21 | sing(N2). |
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| 22 | |
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| 23 | beers(0) :- |
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| 24 | write('no more bottles'). |
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| 25 | beers(1) :- |
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| 26 | write('1 bottle'). |
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| 27 | beers(N) :- |
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| 28 | N > 1, |
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| 29 | write(N), write(' bottles'). |
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| 30 | |
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| 31 | :- end_object. |
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