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"));
Object2D twoDimension = new Object2D(3, 4);
Object3D threeDimension = new Object3D(5, 6, 7);
Console.WriteLine("Distance in the 2D space = {0:f2}",
twoDimension.CalcDistance2D(1, -2, 3, 4));
Console.WriteLine("Distance in the 3D space = {0:f2}",
threeDimension.CalcDistance3D(5, 2, -1, 3, -6, 4));
Console.WriteLine("Volume = {0:f2}", threeDimension.CalcVolume());
Console.WriteLine("Diagonal XYZ = {0:f2}", threeDimension.CalcDiagonalXYZ());
Console.WriteLine("Diagonal XY = {0:f2}", threeDimension.CalcDiagonalXY());
Console.WriteLine("Diagonal XZ = {0:f2}", threeDimension.CalcDiagonalXZ());
Console.WriteLine("Diagonal YZ = {0:f2}", threeDimension.CalcDiagonalYZ());
}