Test Round

using System;

namespace Water_dispenser
{
    class Program
    {
        static void Main()
        {
            var n = 0d;
            bool f = false;
            var s = "";
            while (s != "END")
            {
                while (!f)
                {
                    f = double.TryParse(s = Console.ReadLine(), out n);
                    if (s == "END") break;
                }
                if (f)
                {
                    Console.WriteLine($"Math.Round(n, 2, AWF 0)={Math.Round(n, 2,MidpointRounding.AwayFromZero)}");
                    Console.WriteLine($"Math.Round(n, 2, To even)={Math.Round(n, 2,MidpointRounding.ToEven)}");
                    Console.WriteLine($"Math.Round(n, 2)={Math.Round(n, 2)}");
                    Console.WriteLine($"Math.Round(n+1, 2)={Math.Round(n + 1, 2)}");
                    Console.WriteLine($"Math.Round(n-1, 2)={Math.Round(n - 1, 2)}");
                    Console.WriteLine($"Math.Round((n+1-1), 2)={Math.Round((n + 1 - 1), 2)}");
                    Console.WriteLine($"n:F2={n:F2}");
                    Console.WriteLine($"n+1:F2={n+1:F2}");
                    f = !f;
                }
            }
        }
    }
}