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odd(X):- 1 is mod(X,2).
even(X):- 0 is mod(X,2).

Success #stdin #stdout 0.02s 68352KB

stdin

odd(3).
even(3).
odd(4).
even(4).

stdout

GNU Prolog 1.3.1
By Daniel Diaz
Copyright (C) 1999-2009 Daniel Diaz

yes

no

no

yes

https://ideone.com/1SyO0

language:

Prolog (gprolog 1.4.5)

created:

visibility:

public

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