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;
using System.Linq;
using System.Text;

namespace AOJ_Practice
{
    class Program
    {
        static void Main(string[] args)
        {
            while (true)
            {
                var oneLine = Console.ReadLine();

                if (oneLine == "0")
                {
                    goto Finish;
                }

                var splitedValue = oneLine.Select(x => int.Parse(x.ToString())).Sum();
                Console.WriteLine(splitedValue);
            }

            Finish:
            return;
        }
    }
}