How to include header?

Question

I downloaded IFlashDX header file with all needed files but I don't know to use it. I type #include <IFlashDX.h> it says it can't read the file. So if someone can explain me how to include it step by step. Where I should extract and which files to extract.

Answer 1

Lexus Collins this is the list of errors I get after that
https://pastebin.com/HjVR6zR5

Answer 2

Lexus Collins there is library file too, where to extract it?