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.*;
import java.text.*;
/*
Main class for AOJ where there is no input.
*/
public class Main{
   public static void main(String[] args){
      Scanner sc = new Scanner(System.in);
      String str;
      int sum;
      
      while(true){
         sum = 0;
         str = sc.nextLine();
         if(str.equals("0")){
            break;
         }else{
            for(int i = 0; i < str.length(); i ++){
               sum += Character.getNumericValue(str.charAt(i));
            }
            System.out.println(sum);
         }
         
         
      }
   }//main
}//class