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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).
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
countdown(15).
compilation info 
prog.pl:7:1: syntax error: . or operator expected after expression
	1 error(s)
compilation failed
stdout 
Standard output is empty
https://ideone.com/aHafg
language:
Prolog (gprolog 1.4.5)
created:
14 years ago
visibility:
public

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