//---------------------------------------------------------------------------
//  Arm Motion Control
//---------------------------------------------------------------------------
class TArm
{
    public:
        __fastcall TArm(void);
        bool __fastcall Initialize(void);
    private:
};

//---------------------------------------------------------------------------
//  Backbone Control
//---------------------------------------------------------------------------
class TBackBone
{
    public:
        __fastcall TBackBone(void);
        class   TArm    *ARM;
    private:
};

Class내부에 다른class를  pointer로 선언해도 되는가요?
이렇게 써도 무방한가요? 아니면 class TArm ARM; 이렇게 써야되는지....