Problem:
Sum of Numbers

Write a program which reads an integer and prints sum of its digits.

Input

The input consists of multiple datasets. For each dataset, an integer x is given in a line. The number of digits in x does not exceed 1000.

The input ends with a line including single zero. Your program should not process for this terminal symbol.

Output

For each dataset, print the sum of digits in x.

Sample Input

123
55
1000
0

Sample Output

6
10
1

Solution in JAVA (judge verdict: Accepted)

import java.util.Scanner;

 
class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while(true) {
            String in = scanner.nextLine();
            int sum = 0;

            if (in.equals("0")) break;
    
            for (int i=0; i<in.length(); i++) {
                char c = in.charAt(i);
                int n = Character.getNumericValue(c);
                sum += n;
            }
    
            System.out.println(sum);
        }
    }
}