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  1. countdown(0) :-
  2. write(0), nl,
  3. !.
  4. countdown :- 
  5. write(X), nl,
  6. Y is X-1,
  7. countdown(Y).
Success #stdin #stdout 0.02s 68352KB
comments (?)
stdin 
countdown(15).
stdout 
GNU Prolog 1.3.1
By Daniel Diaz
Copyright (C) 1999-2009 Daniel Diaz

no
https://ideone.com/qiA8p
language:
Prolog (gprolog 1.4.5)
created:
14 years ago
visibility:
public

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