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;

public class Main{
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		while(true) {
			String n = scan.next();
			if(n.equals("0")) {
				break;
			}
			int sum = 0;
			for(int i = 0; i < n.length(); i++) {
				sum += Integer.parseInt(n.substring(i, i + 1));
			}
			System.out.println(sum);
		}
		scan.close();
	}
}