To explicitly qualify a member of a namespace, use the namespace identifier with a :: scope resolution operator.
For example:
namespace VENDITTI {
void j()
};
VENDITTI::j();
In this example, the scope resolution operator provides access to the function j held within namespace VENDITTI. The scope resolution operator :: is used to access identifiers in both global and local namespaces. Any identifier in an application can be accessed with sufficient qualification. Explicit access cannot be applied to an unnamed namespace.