下列虚基类的声明中,正确的是
A.class virtual B:public A B.class B:virtual public A C.class B:public A virtual D.virtual class B:public A正确答案B
下列虚基类的声明中,正确的是
A.class virtual B:public A B.class B:virtual public A C.class B:public A virtual D.virtual class B:public A正确答案B