In the githaba code I found the following line.
#include <sodium/crypto_hash_sha256.h> It is not entirely clear how to connect this lib. In c #, this was done by adding a project and specifying a link to it. In c ++, as I understand it, this is done differently. I added the path to the folder with the libsodium project to the libsodium , but it still does not see this include 