笔试题(using namespace std)
usingnamespacestd;classA{protected:intm_data;public:A(intdata=0){m_data=data;}intGetData(){returndoGetData();}virtualintdoGetData(){returnm_data;}};classB:publicA{protected:intm_data;public:B(intdata=...
usingnamespacestd;classA{protected:intm_data;public:A(intdata=0){m_data=data;}intGetData(){returndoGetData();}virtualintdoGetData(){returnm_data;}};classB:publicA{protected:intm_data;public:B(intdata=...