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+====== Food chain ======
+{{tag>recursion}}
+===== Description =====
+Program use recursion to show food chain
+**Source**:  Learn prolog now!, 2001, (course available on-line)
+===== Download =====
+Program source code: {{food_chain.pl}}
+===== Listing =====
+<code prolog>
+is_digesting(X,Y) :- just_ate(X,Y).
+is_digesting(X,Y) :-
+	just_ate(X,Z),
+	is_digesting(Z,Y).
+just_ate(mosquito,blood(john)).
+just_ate(frog,mosquito).
+just_ate(stork,frog).</code>
+===== Comments =====

pl/prolog/pllib/food_chain.txt · ostatnio zmienione: 2019/06/27 15:50 (edycja zewnętrzna)

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