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 sc = new Scanner(System.in);
        
        for(;;){
            String x = sc.next();
            sc.nextLine();
            if(x.charAt(0) == '0') break;
            int n = 0;
            for(int i=0;i<x.length();i++){
                n += x.charAt(i);
                n -= 48;
            }
            System.out.println(n);
        }
    }
}