[C++知识库]C++类与对象：程序片段编程题/汽车类的定义，拷贝构造函数，析构函数的定义

定义一个汽车类Car，其成员数据包括汽车编号id、品牌brand、发动机动力power和载客人数numOfPersons，

实现一个打印自身信息的成员函数printCar()。

定义默认构造函数、带所有成员数据的构造函数和拷贝构造函数。

设某单位有3个品牌都是“丰田”的汽车，且发动机动力和载客人数都一致，只是编号不同。

使用带所有成员数据的构造函数生成一个汽车对象，使用拷贝构造函数生成另外两个汽车对象，并通过调用修改编号的成员函数修改这个汽车对象的编号。

最后调用printCar()打印所有汽车对象的信息。

【要求】

给出Car类的析构函数。

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这个题太恶心了，填片段，不解释啦，全都是泪~~~~~

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#include? <iostream>
#include? <cstring>
using? namespace? std;

class Car
{
????? public:
???????????? Car();
???????????? Car(int pId,const? char*? pBrand,float? pPower,int pNumOfPersons);
???????????? Car(Car& c);
???????????? void printCar();
???????????? ~Car();
???????????? void? setId(int);
????? private:
????????????? int id;
????????????? char *brand;
????????????? int power;
????????????? int numOfPersons;
???????????? ?
};
Car::Car()
{????????? cout<<"Constructed? without? any? parameter."<<endl;
}
Car::Car(int? pId,? const? char*? pBrand,float? pPower,int? pNumOfPersons)
{
?? ?id=pId;
??? brand=new char[strlen(pBrand)+1];
??? if(brand!=0)
??????? {
?????? ??? ?strcpy(brand,pBrand);
?? ??? ?}
??? power=pPower;
??? numOfPersons = pNumOfPersons;
??? cout<<"Constructed? with? all? parameters."<<endl;
}
Car::Car(Car&? car)
{
?? ?id = car.id+1;
??? brand=new char[strlen(car.brand)+1];
???? if(brand!=0)
?? ?{
?? ?strcpy(brand,car.brand);
?? ?}
??? power=car.power;
??? numOfPersons=car.numOfPersons;
??? cout<<"Deep? Constucted."<<endl;
}
Car::~Car()
{???????? ?
??? delete[]? brand;
??? cout<<"Deconstructed."<<endl;
}
void? Car::printCar()
{?????????? ?
?? ?cout<<"id:? "<<id<<",? "
??? <<"brand:? "<<brand<<",? "
??? <<"power:? "<<power<<",? "
??? <<"numOfPersons:? "<<numOfPersons<<endl;
}
void? Car::setId(int? pId)
{
?? ?id = pId;
}
int? main()
{???????? ?
?? ?Car? car1(1001,"Toyota",1.8f,5);
??? Car? car2(car1);
??? car2.setId(1002);
??? Car? car3=car1;
??? car3.setId(1003);
??? car1.printCar();
??? car2.printCar();
??? car3.printCar();
??? return? 0;
}