SumAndDifference.java

1.Create a program that will ask the user to enter the first number and second number. The program should give the sum and the difference of the 1st and 2nd number. Name the program, Numbers.java
Example:

Enter the first number:
Enter the second number:
Sum:
Difference :

My answer:

import java.util.Scanner;
public class SumAndDifference {
static Scanner sc = new Scanner(System.in);
public static void main(String [] args)
    {
       //the user will declare two numbers, so we have to create variables first.

double N1;
double N2;

       //variables are created
       //the program will ask the user to enter the first number

System.out.print("Enter the first number : ");
        N1 = sc.nextDouble();

        //the N1 has been declared
        //the program will ask the user to enter the second number

System.out.print("Enter the second number : ");
        N2 = sc.nextDouble();
        //both variables has been declared

        //the program will compute the two numbers
double sum = N1 + N2;
double difference = N1 - N2;

       //output of the program
System.out.println("Sum : " + sum);
System.out.println("Difference : " + difference);
    }
}