using System;

public class Program

{

    public static void Main()

    {

        int a=0;

        int num=0;

        do

        {

        Console.WriteLine("Give me an number");

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

            if(a!=0)

            {

                num=num+a;

            }

        }

        while(a!=0);

        Console.WriteLine("The sum of your numbers is :"+num);

​

    }

}