fork download
copy 
  1. is_odd(X) :- mod(X/2)=1.
  2. is_even(X) :- mod(X/2)=0.
Success #stdin #stdout 0.02s 68352KB
comments (?)
stdin
copy 
?-is_odd(4).
?-is_even(4).
?-is_odd(15).
?-is_even(15).
stdout
copy 
GNU Prolog 1.3.1
By Daniel Diaz
Copyright (C) 1999-2009 Daniel Diaz
uncaught exception: error(syntax_error('user_input:1 (char:3) . or operator expected after expression'),read_term/3)
uncaught exception: error(syntax_error('user_input:2 (char:3) . or operator expected after expression'),read_term/3)
uncaught exception: error(syntax_error('user_input:3 (char:3) . or operator expected after expression'),read_term/3)
uncaught exception: error(syntax_error('user_input:4 (char:3) . or operator expected after expression'),read_term/3)
https://ideone.com/dBFl7
language:
Prolog (gprolog 1.4.5)
created:
14 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!