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 sc = new Scanner(System.in);

		while (true) {
			int sum = 0;

			char[] num = sc.next().toCharArray();

			if (num[0] == '0') {
				break;
			}

			for (int i = 0; i < num.length; i++) {
				int n = Character.getNumericValue(num[i]);
				sum += n;
			}
			System.out.println(sum);
		}

	}
}