using System;

public class Program

{

    public static void Main()

    {

        int ud;

        int total = 0;

        Console.WriteLine("Tell me as many numbers as you like");

        Console.WriteLine("Type 0 to know your result");

        Console.WriteLine();

        do

        {

        Console.WriteLine("Give a number");

        ud = int.Parse(Console.ReadLine());

            total += ud;

        }

​

        while (ud != 0);

            Console.WriteLine("The result is " + total);

    }

    }

​

​

​