====== Tree 2 ====== {{tag>trees arithmetic}} ===== Description ===== Example of tree for arithmetic phrase {{:prolog:pllib:tree_2.png|}} **Source**: PROLOG str. 36 Wydawnictwo PLJ Warszawa 1991 ISBN 83-85190-63- ===== Download ===== Program source code: {{tree_2.pl}} ===== Listing ===== 3*(5+8)-4. ===== Comments =====