====== Last element ======
{{tag>lists}}
===== Description =====


**Source**:  PROLOG str. 50 Wydawnictwo PLJ Warszawa 1991 ISBN 83-85190-63-5
===== Download =====
Program source code: {{last_element.pl}}
===== Listing =====
<code prolog>
ostatni(X, [X]).
ostatni(X, [_|X]) :- ostatni(X, Y).

test :- ostatni(X, [4, 3, 5, 6, 7]).</code>
===== Comments =====