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.io.*;
public class Main {
    public static void main(String[] args) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        while (true) {
            int i,sum=0;
            try {
                String line = reader.readLine();
                if(line.equals("0")) break;
                for(i=0;i<line.length();i++) {
                    char c = line.charAt(i);
                    sum += Character.getNumericValue(c);
                }
            } catch (IOException e) {
                System.out.println(e);
            }
            System.out.println(sum);
        }


    }
}