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);
		while(true) {
			String s=sc.next();
			int ans=0;
			if(s.equals("0")) {
				System.exit(0);
			}
			for(int i=0; i<s.length(); i++) {
				ans+=s.charAt(i)-'0';
			}
			System.out.println(ans);
		}

	}
}