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.*;

class Main{
	public static void main(String[] args){
		try{
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			String str;
			int i,sum;
			while(true){
				str = br.readLine();
				if(str.equals("0")) break;
				for( i=0, sum=0; i<str.length(); i++ ){
					sum += Integer.parseInt(""+str.charAt(i));
				}
				System.out.println(sum);
			}
		} catch(IOException e){
			System.out.println("Exception :" + e);
		}
	}
}