Development Class C#

using System;
class Program
{
    static void Main()
    {
        Console.WriteLine("Classic Math.Round in CSharp");
        Console.WriteLine(Math.Round(4.4)); // 4
        Console.WriteLine(Math.Round(4.5)); // 4
        Console.WriteLine(Math.Round(4.6)); // 5
        Console.WriteLine(Math.Round(5.5)); // 6
    }
}