C++ open folder and fetch for subfolder

I'm finding a way to fetch all the subfolders in a known folder, and open them, then keep finding all the subfolders in that folder, keep opening them until there aren't any subfolders left more, then move to another folder in C++. Thanks for help!

Following up on Serge Ballesta's comment.

If you can compile c++17, then make use of std::filesystem.

• This SO provides a solution to 'LS' a specific dir. Need to add recursion.

However, if you are not able to run c++17, then you need to consider the OS you are working on.

If Linux and using GCC, use native "dirent.h"

• SO post with solution.
• Just need to #include dirent.h

If Windows, can use either windows.h or use a popular library extension of dirent.h for windows.

• If using windows.h native methods, here is a SO post with solution.

• If using windows extended dirent.h, here is the github link. Just need to grab the header and add to your project.

  • Can be nicer if working cross platform
  • I just used this on my project, and was very convenient and easy.