using System; using System.Data; using System.Text.RegularExpressions; class Class1{ static void Main(string[] args){ int X = (int)Math.Round(2.5555); Console.WriteLine(X); Console.WriteLine(Math.Round(2.5555, 2)); Console.WriteLine(Math.Round(2.444444,3)); Console.WriteLine(Math.Round(2.666666666666666666666666666660001)); Console.WriteLine(Math.Round(2.4444444444444444444444440001)); Console.WriteLine(Math.Round(.5)); Console.WriteLine(Math.Round(1.5)); Console.WriteLine(Math.Round(2.5)); Console.WriteLine(Math.Round(3.5)); Console.WriteLine(); Console.WriteLine(Math.Floor(.5)); Console.WriteLine(Math.Floor(1.5)); Console.WriteLine(Math.Floor(2.5)); Console.WriteLine(Math.Floor(3.5)); Console.WriteLine(); Console.WriteLine(Math.Ceiling(.5)); Console.WriteLine(Math.Ceiling(1.5)); Console.WriteLine(Math.Ceiling(2.5)); Console.WriteLine(Math.Ceiling(3.5)); Console.WriteLine(); } }