/* Adder2.java - This is the same adder program, except that this time,
 * we ask the user for the two numbers to add.
 */

import java.util.Scanner;    // include built-in Scanner class for input

public class Adder2
{
  public static void main(String [] args)
  {
    // Step 1 -- Get input. Ask user to enter 2 numbers, and read them in.
    // Tell computer we want to use a Scanner, and that we want to
    // be able to "scan" the keyboard input, which Java calls System.in.

    Scanner sc = new Scanner(System.in);

    System.out.printf ("Please enter first number:  ");
    int first = sc.nextInt();
    System.out.printf ("Please enter second number:  ");
    int second = sc.nextInt();

    // Step 2 -- Perform calculations.

    int sum = first + second;


    // Step 3 -- Output result of calculations.

    System.out.printf ("The sum of %d and %d is %d\n", first, second, sum);
  }
}

/* Example I/O when we run the program:
 *    Please enter first number:  17
 *    Please enter second number:  3
 *    The sum is of 17 and 3 is 20
 */