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完成下面类中成员函数的定义。

#include

class vehicle

{protected:

int size;

int speed;

public:

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

_________get(){return speed/10;}

};

class car:public vehicle

{public:

int get(){return speed;}

};

class truck:public vehicle

{public:

int get(){return speed;}

};

class car:public vehicle

{public:

int get(){return speed/2;}

};

int max(_________)

return 1;

else

return 2;

}

void main()

{truck t;

car c;

t.set(160);

c.set(80);

cout<

}

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