====== Arg predicate ======
{{tag>misc}}
===== Description =====
Usage of predicate "arg"

**Source**:  PROLOG str. 48 Wydawnictwo PLJ Warszawa 1991 ISBN 83-85190-63-5
===== Download =====
Program source code: {{arg_predicate.pl}}
===== Listing =====
<code prolog>
test1 :- arg(2, osoba("Nowak", "Adam"), X).
test2 :- arg(1, osoba("Nowak", "Adam"), X).</code>
===== Comments =====