32 lines
567 B
Plaintext
32 lines
567 B
Plaintext
|
=================================================================
|
||
|
|
Logtalk - Object oriented extension to Prolog
|
||
|
|
Release 2.15.0
|
||
|
|
|
||
|
|
Copyright (c) 1998-2003 Paulo Moura. All Rights Reserved.
|
||
|
|
=================================================================
|
||
|
|
|
||
|
|
|
||
|
|
| ?- square::nsides(N).
|
||
|
|
|
||
|
|
! error(
|
||
|
|
existence_error(predicate_declaration, nsides(_)),
|
||
|
|
square::nsides(N),
|
||
|
|
user)
|
||
|
|
|
||
|
|
|
||
|
|
| ?- q1::(color(Color), side(Side), position(X, Y)).
|
||
|
|
|
||
|
|
Color = red
|
||
|
|
Side = 1
|
||
|
|
X = 0
|
||
|
|
Y = 0
|
||
|
|
yes
|
||
|
|
|
||
|
|
|
||
|
|
| ?- q2::(side(Side), area(Area), perimeter(Perimeter)).
|
||
|
|
|
||
|
|
Side = 3
|
||
|
|
Area = 9
|
||
|
|
Perimeter = 12
|
||
|
|
yes
|