import java.io.*

public class Arithmetic
{
  public static void main(String[] args)
  {
    int x, y;
    System.out.print("Enter integer value for x: ");
    x = MyInput.readInt();
    System.out.print("Enter integer value for y: ");
    y = MyInput.readInt();

    // display arithmetic results
    System.out.println();
    System.out.println(x + " + " + y + " = " + (x + y));
    System.out.println(x + " - " + y + " = " + (x - y));
    System.out.println(x + " * " + y + " = " + (x * y));
    System.out.println(x + " / " + y + " = " + (x / y));
    System.out.println(x + " % " + y + " = " + (x % y));
    System.out.println();

    // now try it for doubles

    double a, b;
    System.out.print("Enter double (float) value for a: ");
    a = MyInput.readDouble();
    System.out.print("Enter double (float) value for b: ");
    b = MyInput.readDouble();

    // display arithmetic results
    System.out.println();
    System.out.println(a + " + " + b + " = " + (a + b));
    System.out.println(a + " - " + b + " = " + (a - b));
    System.out.println(a + " * " + b + " = " + (a * b));
    System.out.println(a + " / " + b + " = " + (a / b));
    System.out.println(a + " % " + b + " = " + (a % b));
    System.out.println();

  }
}

//------------------

// a class for reading various types from the keyboard (System.in) 
class MyInput
{
    public static String readString()
    {
        String string = "";
        BufferedReader bufferedReader = 
           new BufferedReader(new InputStreamReader(System.in));
        try
        {
            string = bufferedReader.readLine();
        }
        catch (IOException ex)
        {
            throw new RuntimeException(ex);
        }
        return string;
    }

    public static int readInt()
    {
        return Integer.parseInt(readString());
    }

    public static double readDouble()
    {
        return Double.parseDouble(readString());
    }

    // test all the methods of this class
    public static void main(String[] args)
    {
        System.out.println("Testing 'readString()'");
        System.out.print("Input your string : ");
        System.out.println("Your string was '" + readString() + "'");
        System.out.println("\nTesting 'readInt()'");
        System.out.print("Input your int : ");
        System.out.println("Your int was '" + readInt() + "'");
        System.out.println("\nTesting 'readDouble()'");
        System.out.print("Input your double : ");
        System.out.println("Your double was '" + readDouble() + "'");
    }
}