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  1. even(0).
  2. even(s(s(X))):-even(X).
  3. odd(s(0)).
  4. odd(s(s(X))):-odd(X).
  5. halt.
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
even(4).
compilation info 
prog.pl:5: fatal error: redefining built-in predicate halt/0
compilation failed
stdout 
Standard output is empty
https://ideone.com/uMt8K
language:
Prolog (gprolog 1.4.5)
created:
14 years ago
visibility:
public

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