fork download 
  1. even(X) :- X mod 2 is 0.
Success #stdin #stdout 0.02s 68352KB
comments (?)
stdin 
?- even(123).
stdout 
GNU Prolog 1.3.1
By Daniel Diaz
Copyright (C) 1999-2009 Daniel Diaz
uncaught exception: error(syntax_error('user_input:1 (char:4) . or operator expected after expression'),read_term/3)
https://ideone.com/FbKHO
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!