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  1. :- set_prolog_flag(verbose,silent).
  2. :- prompt(_, '').
  3. :- use_module(library(readutil)).
  4.  
  5. main:-
  6. 	process,
  7. 	halt.
  8.  
  9. process:-
  10. 	read_line_to_codes(current_input, Codes),
  11. 	(   Codes = end_of_file
  12. 	->  true
  13. 	;   (  Codes \= [], number_codes(Int, Codes)
  14. 	    -> (Int is 42
  15. 	       -> true
  16. 	       ;  writeln(Int),
  17. 		  process
  18. 	       )
  19. 	    ;  true
  20. 	    )
  21. 	).
  22.  
  23. :- main.
Success #stdin #stdout #stderr 0.05s 7124KB
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stdin
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056295d9e96d38457e15d8586f8d13c16bc1335b4a2253ab2d3701fbffb514c520
stdout
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Standard output is empty
stderr
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ERROR: number_codes/2: Syntax error: Illegal number
Warning: /home/HOBYDU/prog:23:
	Goal (directive) failed: user:main
ERROR: '$runtoplevel'/0: Undefined procedure: program/0
   Exception: (3) program ? EOF: exit
https://ideone.com/RyaNTG
language:
Prolog (swi 7.6.4)
created:
1 day ago
visibility:
public

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