2.　　声明vehicle类，私有数据成员为 int MaxSpeed 　　int Weight ，有public成员函数且为虚函数void run（）；void stop（）；bicycle 类motorcar类 均从vehicle类 虚拟派生得到。Motorcycle类从bicycle 类motorcar类公共派生得到。对虚函数调用，检测其晚期绑定。-2. Statement vehicle class, private data members int MaxSpeed　int Weight , a public member functions and for the virtual function void run ()　void stop ()　bicycle type motorcar vehicle class of the virtual class are derived from the get. Motorcycle class motorcar from the bicycle class is derived class of the public. Of the virtual function call, detected late binding.