Question

(Java Please)

Sum of Digits

Write a program that will sum the digits of a number input by the user.

For example, if the user enters the number 1234, the sum of the digits will be 10 (1 + 2 + 3 + 4 = 10).

The user will enter a number with at least 4 digits (greater than 1000). That value will be sent to a method which will return the sum.

Sample Output 1:

SUM OF DIGITS
-------------
This program will sum the digits of a number you enter.
Enter a number greater than 1000: 1234
The sum of digits for 1234 is 10

Thank you for using SUM OF DIGITS

Answer 1

import java.util.*;
import java.lang.*;
import java.io.*;

class sum_of_digits
{
   public static void main (String[] args)
   {
       int number;
       System.out.println("Enter 4 digit number");
       Scanner s=new Scanner(System.in);
       number = s.nextInt();/*takes input number */
       if(number>1000)         /* checks whether the number is greater than 1000 */
       {
         int result=sum(number);
          System.out.println("The sum :"+result);  
       }
      
   }
   public static int sum(int number)
   {
       int sum=0,temp;
       while(number>0)
       {
           temp=number%10;/*extracts the last digit */
           sum+=temp;     /*adds the last digit with the previous sum*/
           number=number/10; /*divides the number and reduces the length */
       }
      
   return sum; /* returns the sum */
   }
}

input :- 9999

output :-

clear the outputsyntax highlight input Output Success #stdin #stdout 0.06s 2184 192KB Enter 4 digit number The sum:36