5[完成题]
 

在下面程序中的横线处填上适当内容，使程序完整。

   # include

   class vehicle

   {

        protected:

            int size;

            int speed;

        public;

            void setSpeed(int s){speed=s;}

         virtual int getSpeedLevel( ){return speed/10;}

   };

   class car:public vehicle

   {

        public:

             int getSpeedLeve( ){return speed/5;}

   };

   class truck:public vehicle

   {

        public:

             int getspeedLevel( ){return speed/15;}

   };

   int maxSpeedLevel(vehicle &v1 ,vehicle             )

   {

        if(v1.getSpeedLevel( )>v2.getSpeedLevel( ))

             return 1;

        else

             reutrn 2;

   }

   void main()

   {

        turck t;

        car c;

        t.setSpeed(130);

        c.setSpeed(60);

        cout<<><>

   }