fork download 
  1. even(0).
  2. even(s(s(X))):-even(X)
  3.  
  4. odd(s(0)).
  5. odd(s(s(X))):-odd(X)
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
1
compilation info 
prog.pl:4:1: syntax error: . or operator expected after expression
prog.pl:5:21: syntax error: . or operator expected after expression
	2 error(s)
compilation failed
stdout 
Standard output is empty
https://ideone.com/ebSSU
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!