public static void Main() { Console.WriteLine(FileUtils.GetFileExtension("example.exe")); Console.WriteLine(FileUtils.GetFileExtension("example.pdf")); Console.WriteLine(FileUtils.GetFileExtension("example.new.pdf")); Console.WriteLine(FileUtils.GetFileNameWithoutExtension("example")); Console.WriteLine(FileUtils.GetFileNameWithoutExtension("example.pdf")); Console.WriteLine(FileUtils.GetFileNameWithoutExtension("example.new.pdf")); Console.WriteLine( "Distance in the 2D space = {0:f2}", MathUtils.CalculateDistance2D(1, -2, 3, 4)); Console.WriteLine( "Distance in the 3D space = {0:f2}", MathUtils.CalculateDistance3D(5, 2, -1, 3, -6, 4)); double width = 3; double height = 4; double depth = 5; Console.WriteLine("Volume = {0:f2}", MathUtils.CalculateVolume(width, height, depth)); Console.WriteLine("Diagonal XYZ = {0:f2}", MathUtils.CalculateDiagonalXYZ(width, height, depth)); Console.WriteLine("Diagonal XY = {0:f2}", MathUtils.CalculateDiagonalXY(width, height)); Console.WriteLine("Diagonal XZ = {0:f2}", MathUtils.CalculateDiagonalXZ(width, height)); Console.WriteLine("Diagonal YZ = {0:f2}", MathUtils.CalculateDiagonalYZ(height, height)); }