class hanoi
predicates
hanoi : (unsigned N).
end class hanoi
implement hanoi
domains
pole = string.
clauses
hanoi(N) :- move(N, "left", "centre", "right").
class predicates
move : (unsigned N, pole A, pole B, pole C).
clauses
move(0, _, _, _) :- !.
move(N, A, B, C) :-
move(N-1, A, C, B),
stdio::writef("move a disc from % pole to the % pole\n", A, C),
move(N-1, B, A, C).
end implement hanoi
goal
console::init(),
hanoi::hanoi(4).
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