001package iterator.exprone;
002import java.util.Iterator;
003import enumeration.Op;
004
005public class Main {
006        public static void main (String[] args) {
007                Expr one = new Const(1);
008                Expr onePtwo = new BinOp (new Const(1), Op.ADD, new Const(2));
009                Expr threeMfour = new BinOp (new Const(3), Op.MUL, new Const(4));
010                Expr m = new BinOp (onePtwo, Op.SUB, threeMfour);
011                Expr n = new BinOp (m, Op.DIV, new Const(5));
012
013                for (Iterator<Object> i = n.postorderIterator(); i.hasNext(); )
014                        System.out.print (i.next() + " ");
015                System.out.println ("");
016
017                System.out.println ("Value: " + n.evaluate());
018        }
019}