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  1. factorial(0,1).
  2. factorial(N,F):-
  3. N>0,
  4. N1 is N-1,
  5. factorial(N1,F1),
  6.  F is N*F1.
Success #stdin #stdout #stderr 0.03s 7016KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/p8emQg
language:
Prolog (swi 7.6.4)
created:
6 days ago
visibility:
public

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