Beispiel Both

Jan Burse, erstellt 14. Mär 2019
/**
* Prolog code for the module mutual recursion example.
* Local modules cage2 and nest2 in a module file both.
*
* Growth of an idealized rabbit population, according
* to Liber Abaci from 1202 by Leonardo of Pisa, known
* as Fibonacci.
*
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:- package(library(example04)).
:- module(both, [year2/1]).
adults(0, 1) :- !.
adults(N, X) :-
N > 0,
M is N-1,
adults(M, Y),
both/nest2:babies(M, Z),
X is Y+Z.
babies(0, 0) :- !.
babies(N, X) :-
N > 0,
M is N-1,
both/cage2:adults(M, X).
both/cage2:adults(12, X).

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