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 C# (judge verdict: Accepted)

using System;
using System.Collections.Generic;

enum occupant
{
build, floor, room, number
}

class Program
 {



    static void Main(string[] args)
    {
        string nyuryoku;
        char[] data;

        double num,temp;
        var result = new List<double>();

        while (true)
        {

            nyuryoku = Console.ReadLine();

            if (nyuryoku[0] == '0')
                break;
            temp = 0;
            for (int i = 0; i < nyuryoku.Length; i++)
                temp += (nyuryoku[i] - '0');
            result.Add(temp);
        }
        for (int i = 0; i < result.Count; i++)
            Console.WriteLine("{0}", result[i]);


    }

 }