A.+和= B.[]和后置++ C.=和[] D.前置++和[]
A.Aobject.operator++() B.operator++(Aobject) C.++(Aobject) D.Aobject::operator++()
A.構(gòu)造函數(shù) B.析構(gòu)函數(shù) C.成員函數(shù) D.友元函數(shù)