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  1. % Given an input number:
  2.  
  3. factorial(0,1). 
  4.  
  5. factorial(N,F) :-  
  6.    ?- write(25),nl.
  7.    N>0, 
  8.    N1 is N-1, 
  9.    factorial(N1,F1), 
  10.    F is N * F1.
  11.    ?- F
  12.  
  13. halt.
Success #stdin #stdout 0.02s 6204KB
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Standard output is empty
https://ideone.com/RJVmr
language:
Prolog (swi 7.6.4)
created:
14 years ago
visibility:
public

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