411 REFERENCE · Wikibooks
C++ Language/Objects/PointerToMembers
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
It is very common to use a type which is "pointer to int" (the type's name is int*).
Must less common (but still possible) is using a type which is "pointer to int data member of class CRType" (the type's name is int CRType::*).
Additional information about pointers to members (includes interactive examples)