//A類與B類的定義class A{public:  void Test()  {    cout << "A::Test()" << endl;  }};class B : public A{public:  void Test()  {    cout << "B::Test()" << endl;  }};//定義類的成員函數(shù)指針typedef void (A::*A_mFun)(void);typedef void (B::*B_mFun)(void);int main(){  //Code  A a;  B b;  A_mFun pAFun = &(A::Test); //Note:Test成員函數(shù)必須為public,否則會報錯  B_mFun pBFun = &(B::Test); //Note:Test成員函數(shù)必須為public,否則會報錯  (a.*pAFun)();        //輸出A::Test()  (b.*pBFun)();        //輸出B::Test()  (b.*pAFun)();        //輸出A::Test()  A* pA = &a;  B* pB = &b;  (pA->*pAFun)();       //輸出A::Test()  (pB->*pBFun)();       //輸出B::Test()  (pB->*pAFun)();       //輸出A::Test(),B*變量可賦值給A*變量  return 0;}