public class UseCalculator {
    Calculator calc;
    Expr expr;
	
    public UseCalculator() {
	LinearList<Token> toklist1, toklist2, toklist3, toklist4;

	toklist1 = new LinearList<Token>();
	toklist1.add(new Token(Token.TokType.Num, 22));
	toklist1.add(new Token(Token.TokType.Num, 5));
	toklist1.add(new Token(Token.TokType.Add));
	toklist1.add(new Token(Token.TokType.Num, 3));
	toklist1.add(new Token(Token.TokType.Mul));
	toklist1.add(new Token(Token.TokType.Num, 4));
	toklist1.add(new Token(Token.TokType.Num, 3));
	toklist1.add(new Token(Token.TokType.Mul));
	toklist1.add(new Token(Token.TokType.Add));
	toklist1.add(new Token(Token.TokType.Num, 20));
	toklist1.add(new Token(Token.TokType.Sub));
	calc = new Calculator(toklist1);
	expr = calc.makeExpr();
	System.out.println(expr.makeString());
	System.out.println("The value of the expression is: " + expr.evaluate());

	toklist2 = new LinearList<Token>();
	toklist2.add(new Token(Token.TokType.Num, 22));
	toklist2.add(new Token(Token.TokType.Num, 5));
	toklist2.add(new Token(Token.TokType.Num, 3));
	toklist2.add(new Token(Token.TokType.Mul));
	toklist2.add(new Token(Token.TokType.Add));
	toklist2.add(new Token(Token.TokType.Num, 4));
	toklist2.add(new Token(Token.TokType.Num, 3));
	toklist2.add(new Token(Token.TokType.Mul));
	toklist2.add(new Token(Token.TokType.Add));
	toklist2.add(new Token(Token.TokType.Num, 20));
	toklist2.add(new Token(Token.TokType.Sub));
	calc = new Calculator(toklist2);
	expr = calc.makeExpr();
	System.out.println(expr.makeString());
	System.out.println("The value of the expression is: " + expr.evaluate());

	toklist3 = new LinearList<Token>();
	toklist3.add(new Token(Token.TokType.Num, 22));
	toklist3.add(new Token(Token.TokType.Num, 5));
	toklist3.add(new Token(Token.TokType.Add));
	toklist3.add(new Token(Token.TokType.Num, 3));
	toklist3.add(new Token(Token.TokType.Mul));
	toklist3.add(new Token(Token.TokType.Num, 4));
	toklist3.add(new Token(Token.TokType.Num, 3));
	toklist3.add(new Token(Token.TokType.Num, 20));
	toklist3.add(new Token(Token.TokType.Sub));
	toklist3.add(new Token(Token.TokType.Mul));
	toklist3.add(new Token(Token.TokType.Add));
	calc = new Calculator(toklist3);
	expr = calc.makeExpr();
	System.out.println(expr.makeString());
	System.out.println("The value of the expression is: " + expr.evaluate());

	toklist4 = new LinearList<Token>();
	toklist4.add(new Token(Token.TokType.Num, 23));
	toklist4.add(new Token(Token.TokType.Num, 5));
	toklist4.add(new Token(Token.TokType.Num, 23));
	toklist4.add(new Token(Token.TokType.Num, 5));    
	toklist4.add(new Token(Token.TokType.Add));
	toklist4.add(new Token(Token.TokType.Add));
	toklist4.add(new Token(Token.TokType.Mul));
	toklist4.add(new Token(Token.TokType.Num, 18));
	toklist4.add(new Token(Token.TokType.Sub));
	toklist4.add(new Token(Token.TokType.Num, 4));
	toklist4.add(new Token(Token.TokType.Num, 3));
	toklist4.add(new Token(Token.TokType.Num, 20));
	toklist4.add(new Token(Token.TokType.Sub));
	toklist4.add(new Token(Token.TokType.Mul));
	toklist4.add(new Token(Token.TokType.Add));
	calc = new Calculator(toklist4);
	expr = calc.makeExpr();
	System.out.println(expr.makeString());
	System.out.println("The value of the expression is: " + expr.evaluate());
    }
		
    public static void main(String[] args) {
	new UseCalculator();
    }
}