static void Main()
{
// Namespace: Files, Class: File
Console.WriteLine(File.GetFileExtension("example"));
Console.WriteLine(File.GetFileExtension("example.pdf"));
Console.WriteLine(File.GetFileExtension("example.new.pdf"));
Console.WriteLine(File.GetFileNameWithoutExtension("example"));
Console.WriteLine(File.GetFileNameWithoutExtension("example.pdf"));
Console.WriteLine(File.GetFileNameWithoutExtension("example.new.pdf"));
// Namespace: Figure, Class: Cube
Console.WriteLine("Distance in the 2D space = {0:f2}",
Cube.Distance(1, -2, 3, 4));
Console.WriteLine("Distance in the 3D space = {0:f2}",
Cube.Distance(5, 2, -1, 3, -6, 4));
Cube.Width = 3;
Cube.Height = 4;
Cube.Depth = 5;
Console.WriteLine("Volume = {0:f2}", Cube.CalcVolume());
Console.WriteLine("Diagonal XYZ = {0:f2}", Cube.CalcDiagonalXYZ());
Console.WriteLine("Diagonal XY = {0:f2}", Cube.CalcDiagonalXY());
Console.WriteLine("Diagonal XZ = {0:f2}", Cube.CalcDiagonalXZ());
Console.WriteLine("Diagonal YZ = {0:f2}", Cube.CalcDiagonalYZ());
}