继承练习之汽车类—C++

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/*
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功能：汽车类
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日期：2013-11-25
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*/
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#include <iostream>
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using namespace std;
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/**********************************************************/
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//汽车类
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class Vehicle
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{
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public:
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  Vehicle(int wheels=0,double weight=0):
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    m_iWheels(wheels),m_iWeight(weight){};
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    int getWheels()const;                              //获取车轮个数
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    double getWeight()const;                          //获取车重
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protected:
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  int m_iWheels;                                     //车轮个数
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  double m_iWeight;                                 //车重
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};
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//引擎类
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class Engine
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{
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public:
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  Engine(double emissions=0):
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    m_iEmissions(emissions){};
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  void setEmissions(double emissons);                //设置排量信息
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    double getEmissions()const;                       //获取排量信息
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private:
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  double m_iEmissions;                               //排量信息
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};
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//小车类
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class Car : public Vehicle,private Engine
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{
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public:
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  Car(int wheels,double weight);
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  void setPassengerload(int passenger_load);                 //设置车载人数
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  int getPassengerload()const;                              //获取车载人数
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  void setEmissions(double emissons);                      //设置排量信息
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  double getEmissions()const;                             //获取排量信息
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private:
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  int m_ipassenger_load;                                 //车载人数
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};
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//卡车类
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class Truck :protected Vehicle,private Engine
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{
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public:
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  Truck(int wheels,double weight,double emissions);
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  void setPassengerload(int passenger_load);          //设置车载人数
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  int getPassengerload()const;                       //获取车载人数
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  void setPayload(double payload);                  //设置载重量
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  double getPayload()const;                        //获取载重量
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  int getWheels()const;                           //获取车轮个数
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  double getWeight()const;                       //获取车重
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  double getEmissions()const;                   //获取排量信息
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private:
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   int m_iPassenger_load;                     //车载人数
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   double m_iPayload;                        //载重量
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};
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/**********************************************************/
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//汽车类
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int Vehicle::getWheels()const
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{
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  return m_iWheels;
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}
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double Vehicle::getWeight()const
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{
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  return m_iWeight;
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}
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//引擎类函数
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void Engine::setEmissions(double emissons)
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{
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  m_iEmissions = emissons;
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}
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double Engine::getEmissions()const
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{
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  return m_iEmissions;
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}
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//小车类函数
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Car::Car(int wheels=0,double weight=0):Vehicle(wheels,weight)
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{
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}
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void Car::setPassengerload(int passenger_load)
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{
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  m_ipassenger_load = passenger_load;
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}
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int Car::getPassengerload()const
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{
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  return m_ipassenger_load;
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}
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void Car::setEmissions(double emissons)
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{
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  Engine::setEmissions(emissons);
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}
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double Car::getEmissions()const
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{
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  return Engine::getEmissions();
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}
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//卡车类
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Truck::Truck(int wheels=0,double weight=0,double emissions=0):Vehicle(wheels,weight)
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{
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    Engine::setEmissions(emissions);
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}
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void Truck::setPassengerload(int passenger_load)
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{
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  m_iPassenger_load = passenger_load;
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}
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int Truck::getPassengerload()const
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{
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  return m_iPassenger_load;
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}
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void Truck::setPayload(double payload)
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{
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  m_iPayload = payload;
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}
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double Truck::getPayload()const
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{
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  return m_iPayload;
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}
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int Truck::getWheels()const
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{
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  return m_iWheels;
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}
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double Truck::getWeight()const
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{
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  return m_iWeight;
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}
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double Truck::getEmissions()const
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{
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    return Engine::getEmissions();
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}
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/**********************************************************/
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int main(void)
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{
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    Car c1(4,300);
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  c1.setPassengerload(5);
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  c1.setEmissions(200);
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  Truck T1(6,1000,300);
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  T1.setPassengerload(2);
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  T1.setPayload(900);
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  cout<<"c1的信息为:"<<endl<<"车轮个数："<<c1.getWheels()<<" "<<"车重："<<c1.getWeight()<<endl;
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  cout<<"排量信息："<<c1.getEmissions()<<" "<<"车载人数："<<c1.getPassengerload()<<endl<<endl;
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    cout<<"T1的信息为:"<<endl<<"车轮个数："<<T1.getWheels()<<" "<<"车重："<<T1.getWeight()<<endl;
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  cout<<"排量信息："<<T1.getEmissions()<<" "<<"车载人数："<<T1.getPassengerload()<<endl;
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  cout<<"载重量："<<T1.getPayload()<<endl<<endl;
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  system("pause");
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  return 0;
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}