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;
import java.util.Arrays;
public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int x = 1,l;
        String s = "1";
        char[] c;
        int cnt;
        while( !s.equals("0")){
            cnt = 0;
            s = sc.next();
            c = s.toCharArray();
            if(s.equals("0")) break;
            l = s.length();
            for(int i = 0;i<l;i++){
                cnt += c[i] - '0';
            }
            System.out.printf("%d%n",cnt);
            
        }
        sc.close();
        
        
    }
}