[C++] Build Error? Please Help!

[VictorN]

The directory is in visual studio, folder "include"?
I try it but not work
The error is the same, file not exist.

What did you try?
Does the folder "bzscmn" exist within the VC "Include" directory?
Does the file "file.h" exist within "bzscmn" folder?
Did you try

#include <bzscmn\file.h>

or

#include "bzscmn\file.h"

rather than

#include <bzscmn/file.h>

I'll post the library, so you can try.

Don't do it. No one here needs it.