using System;

public class Program

{

    public static void Main()

    {

        decimal distance = 0.0m; 

        var s5 = distance.ToString();

        var s6 = distance.ToString("#");

        var s7 = distance.ToString("#, 0.0");

        var s8 = distance.ToString("#, 0. 0000");

        Console.WriteLine(s5);

        Console.WriteLine(s6);

        Console.WriteLine(s7);

        Console.WriteLine(s8);

    }

}