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 str = sc.nextLine();//先にstring変換

            if(str.equals("0")){//0の時ここ大事んご
                break;
            }
            
            else{
                int sum = 0;

                for(int i = 0; i < str.length(); i++){
                    sum += Character.getNumericValue(str.charAt(i));
                }
                System.out.println(sum);
            }
        }
        sc.close();
    }
}