Question

For example, sumDigits(234) returns 9 (= 2 + 3 + 4). (Hint: Use the % operator to extract digits and the / operator to remove the extracted digit. For instance, to extract 4 from 234, use 234 % 10 (= 4 ). To remove 4 from 234, use 234 / 10 (= 2 3 ). Use a loop to repeatedly extract and remove the digit until all the digits are extracted. Write a test program that prompts the user to enter an integer then displays the sum of all its digits. So in your main method you'd call sumDigits() like this and print what it returns. For example: System.out.println("Sum of the digits in the number 1234 is: " + sumDigits(1234)); Please watch this video on how to export your Java project from Eclipse:

Answer 1

Answer:

import java.util.Scanner;

public class Main

{

public static void main(String[] args) {

    Scanner input = new Scanner(System.in);

       System.out.print("Enter an integer: ");

       int number = input.nextInt();

 System.out.println("Sum of the digits in the number " + number + " is: " + sumDigits(number));

}

public static int sumDigits(int number){

       int remainder = (int)Math.abs(number);

       int sum = 0;

       

       while(remainder != 0){

           sum += (remainder % 10);

           remainder = remainder / 10;

       }

       return sum;

   }    

}

Explanation:

- Initialize two variables to hold remainder and sum values

- Initialize a while loop operates while the remainder is not equal to zero

- Inside the loop, extract digits and assign these digits into sum. Remove extracted digits from the remainder

- When all the digits are extracted, return the sum value

- Inside main, get input from the user and call the method