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  1. num(1).
  2. num(X) :-
  3. 	X>0.
  4. 	write(X).
  5. 	X is X-1.
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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?- num(10)
compilation info 
prog.pl:4: fatal error: redefining built-in predicate write/1
compilation failed
stdout
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Standard output is empty
https://ideone.com/B9rAY
language:
Prolog (gprolog 1.4.5)
created:
14 years ago
visibility:
public

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