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  1.  
  2. :- initialization(main).
  3.  
  4. % Facts
  5. likes(roger, discretemath).
  6. likes(zidan, football).
  7. likes(roger, zidan).
  8. likes(zidan, roger).
  9. likes(zidan, chocolate).
  10. likes(roger, banana).
  11.  
  12. % Main program
  13. main :-
  14.     write('Masukkan Person (contoh: roger): '),
  15.     read(Person),
  16.     write('Masukkan Thing (contoh: banana): '),
  17.     read(Thing),
  18.     (   likes(Person, Thing)
  19.     ->  writeln('true')
  20.     ;   writeln('false')
  21.     ),
  22.     halt.
  23.  
Success #stdin #stdout #stderr 0.03s 6884KB
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stdin
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zidan
stdout
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Masukkan Person (contoh: roger):
stderr
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ERROR: /home/d3CDrz/prog:2: Initialization goal raised exception:
ERROR: Stream user_input:0:39 Syntax error: Unexpected end of file
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/MIzNcl
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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