The Cinema 4D C++ SDK is not the same as the Cineware SDK.
The Cinema 4D C++ SDK is included in every distribution of Cinema 4D.
The Maxon Cineware SDK can be downloaded from the developers' blog[URL-REMOVED], as you already did, according to your previous posts.
[URL-REMOVED] @maxon: This section contained a non-resolving link which has been removed.