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[])throws IOException
    {
BufferedReader input=new BufferedReader (new InputStreamReader (System.in));
    while(true)
        {
         
        int sum=0;
        String str=input.readLine();
        if(str.equals("0"))break;
        for(int i=0;i<str.length();i++)
            {
             
            sum+=str.charAt(i)-'0';
            }
        System.out.println(sum);
        }
    }
}