static void Main() { Console.WriteLine(FileUtils.GetFileExtension("example")); 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}", GeometryUtils.CalculateDistance2D(1, -2, 3, 4)); Console.WriteLine("Distance in the 3D space = {0:f2}", GeometryUtils.CalculateDistance3D(5, 2, -1, 3, -6, 4)); int width = 3; int height = 4; int depth = 5; Console.WriteLine("Volume = {0:f2}", GeometryUtils.CalculateVolume(width, height, depth)); Console.WriteLine("Diagonal XYZ = {0:f2}", GeometryUtils.CalculateDiagonal3D(width, height, depth)); Console.WriteLine("Diagonal XY = {0:f2}", GeometryUtils.CalculateDiagonal2D(width, height)); Console.WriteLine("Diagonal XZ = {0:f2}", GeometryUtils.CalculateDiagonal2D(width, depth)); Console.WriteLine("Diagonal YZ = {0:f2}", GeometryUtils.CalculateDiagonal2D(height, depth)); }