I recently tripped over this when I created a "reason.h"
and discovered that Windows had a file of the same name
deep inside MFC.
It is my understanding that that would be solved by placing your file in a local directory called 'inc/' and having:
#include "inc/reason.h"
instead of: #include <reason.h>
(or just replacing "" with <>).
But I have never programmed in VSC before, so I may be wrong.
A sufficiently long include path can give you this problem anyway. I recently tripped over this when I created a "reason.h" and discovered that Windows had a file of the same name deep inside MFC.