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) {

			// ?????????????????\???
			String input = sc.nextLine();

			// 0?????\?????????????????????
			if (input.equals("0"))
				break;

			// ??\?????????????????????char????????????
			char[] sentence = input.toCharArray();

			// ????¨?????????\???????????°
			int sum = 0;

			// ???????????°??????????¨?????¨????????????????
			for (int cnt = 0; cnt < sentence.length; cnt++) {

				sum += Character.getNumericValue(sentence[cnt]);

			}
			System.out.println(sum);
		}
		sc.close();
	}
}