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 in = new Scanner(System.in);
    while(true) {
      char[] number = in.next().toCharArray();
      if (number[0] == '0') break;
      int sum = 0;
      for (int i = 0; i < number.length; i++) {
        sum += Character.getNumericValue(number[i]);
      }
      System.out.println(sum);
    }
  }
}