import java.util.Scanner;

/**
   This program calculates the value of an expression 
   consisting of numbers, arithmetic operators, and parentheses.
*/
public class ExpressionCalculator
{
   public static void main(String[] args)
   {
      Scanner in = new Scanner(System.in);
      System.out.print("Enter an expression: ");
      String input = in.nextLine();
      Evaluator e = new Evaluator(input);
      int value = e.getExpressionValue();
      System.out.println(input + "=" + value);
   }
}
