using System;

public class Program

{

    public static void Main()

    {

        double target = 1.565;

        Console.WriteLine(target);

​

        var round = Math.Round(target, 0);

        var Ceiling = Math.Ceiling(target);

        var floor = Math.Floor(target);

        Console.WriteLine(round);

        Console.WriteLine(Ceiling);

        Console.WriteLine(floor);       

    }

}