using System;

public class Program

{

    public static void Main()

    {

        int number1 = 0;

        int number2 = 0;

​

        do

        {

            Console.Write("Enter a number ");

            number1 = Convert.ToInt32(Console.ReadLine());

​

            number2 = number1 + number2;

​

            if (number1 != 0)

                Console.WriteLine($"Total: {number2}");

        }

        while (number1 != 0);

​

        Console.WriteLine("Finished");

    }

}