/**
 * Write a description of class Test here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
import java.util.*;
public class Test
{
    public static void main(String[] args)
    {
       String answer;
       Scanner kb = new Scanner(System.in);
       while(true)
       {
           System.out.println("new expression(y/n)?");
           answer = kb.nextLine();
           if(answer.equals("n"))
           {
               break;
           }
           ExpressionEvaluator expression1 = new ExpressionEvaluator();
           System.out.println(expression1.getExpr() + '\n');
           expression1.evaluator();
       }
    }
}