#include<iostream>
using namespace std;
class Vehicle
{
public:
    Vehicle(float speed=0,int total=0)
    {
        Vehicle::speed=speed;
        Vehicle::total=total;
    }
protected:
    float speed;
    int total;
};
class  Motor
{
public:
    Motor(char*motor)
    {
        Motor::motortype=motor;
    }
    char* SMT(Motor &temp);
protected:
    char* motortype;
};
char* Motor::SMT(Motor &temp)
{
        return temp.motortype;
}
 
class Car:public Vehicle
{
public:
    Car(float speed,int total,int aird,char* mototype):Vehicle(speed,total),motor(motortype)
    {
        Car::aird=aird;
    }
 
    Motor rm(Car &temp);
protected:
    int aird;
    Motor motor;
};
Motor Car::rm(Car &temp)
{
    return temp.motor;
}
void test101(Vehicle &temp)
{
};
void test102(Motor &temp)
{
    cout<<temp.SMT(temp);
}
 
void test24()
{
    Car a(150,4,250,"奥地利AVL V8");
    test101(a);
    test102(a.rm(a));
}

上述代码是一个教程上的例子，但是提示有语法问题，是在第34行，提示：“motorytpye”没有定义。
 请问应该如何修改？
 谢谢！

谢谢！