佛山网站建设乐云seo在线制作,青海网站建设推广,大连开发区天气,南昌网站网页设计1.实验目的
(1)理解多态性的概念。 (2)掌握如何用虚函数实现动态联编 (3)掌握如何利用虚基类。
2.实验内容
设计一个飞机类 plane,由它派生出歼击机类fighter和轰炸机类 bomber,歼击机类fighter 和轰炸机类bomber 又共同派生出歼轰机(多用途战斗机)。利用虚函数和虚基类描述…1.实验目的
(1)理解多态性的概念。 (2)掌握如何用虚函数实现动态联编 (3)掌握如何利用虚基类。
2.实验内容
设计一个飞机类 plane,由它派生出歼击机类fighter和轰炸机类 bomber,歼击机类fighter 和轰炸机类bomber 又共同派生出歼轰机(多用途战斗机)。利用虚函数和虚基类描述飞机类及其派生的类族。
3. 参考代码
#include iostream
using namespace std;
class plane //飞机
{
private:double aerofoil; //机翼double airframe; //机身double empennage; //尾翼double voyage; //航程int passenger; //乘员数
public:plane(double,double,double,double,int);virtual void display();
};
void plane::display()
{
cout\taerofoil\tairframe\tempennage\tvoyage\tpassenger;
}
plane::plane(double wing,double frame,double tail,double distance,int num)
{aerofoilwing; airframeframe; empennagetail; voyagedistance;passengernum;
}
class fighter:public plane //歼击机
{
private:int missile; //导弹数
public:fighter(double,double,double,double,int,int);void fight();void display();
};
fighter::fighter(double wing,double frame,double tail,double distance,int num,int load_missile):plane(wing,frame,tail,distance,num)
{missileload_missile;
}
void fighter::fight()
{ coutFight!endl;
}
void fighter::display()
{coutThis is a fighter!endl;plane::display();cout\tmissileendl;
}
class bomber:public plane //轰炸机
{
private:double bomb; //载弹量
public:bomber(double, double,double,double,int,double);void atack();double getbomb();void display();
};
bomber::bomber(double wing,double frame,double tail,double distance,
int num, double load_bomb):plane(wing,frame,tail,distance,num)
{bombload_bomb;
}
void bomber::atack()
{coutAtack!endl;
}
double bomber::getbomb()
{return bomb;
}
void bomber::display()
{coutThis is a bomber!endl;plane::display();cout\tbombendl;
}
class fighter_bomber:virtual public fighter,virtual public bomber//歼轰机多用途战斗机
{
public:fighter_bomber(double, double,double,double,int,int,double);void display();
};
void fighter_bomber::display()
{coutThis is a fighter_bomber!endl;fighter::display();cout\tgetbomb()endl;fight();atack();
}fighter_bomber::fighter_bomber(double wing,double frame,double tail,
double distance,int num,int load_missile,double load_bomb): fighter
(wing,frame,tail,distance,num,load_missile),bomber(wing,frame,tail,
distance,num,load_bomb)
{ }
void main()
{fighter f(10.0, 6.0, 2.5,1800,1,8); //歼击机f.display();bomber b(30,9,6,12000,12,6000); //轰炸机b.display();fighter_bomber fb(20,7,3.2,4000,2,6,2500); //歼轰机fb.display();
}
