C++实验报告8

1、实验报告多态性报告书名称实验8-1多态性1姓名陈局雪指导教师乐仁昌学号120352010054日期任务清单场了严明Point类,有坐标_x, _y两个成贝变重；对 Point类重载 + (自增)、 (自减)运算符，实现对汇标值的改变。实验方法编写程序声明Point类，在类中声明整型的私有成员变量_x、_y,声明成员函数 Point&operator + () ; Point operator+ (int);以实现对 Point 类重载 + (自增)运算 符，严明成员函数Point &operator -() ; Point operator - (int);以实现对 Point 类重载“一一”

2、(自减)运算符，实现对坐标值的改变。程序名：lab8_1.cpp实验预估时间40分钟实验结果#includeusing namespace std;class Point public:Point(int x=0,int y=0);Point &operator +();Point operator +(int);Point &operator -();Point operator -(int);void disypaly();private:int _x,_y；Point:Point(int x,int y)_x=x;_y=y;void Point:disypaly()cout(_x,_y)

3、endl;Point &Point:operator +()_x+;_y+;return *this;Point Point:operator +(int)Point old=*this;+(*this);return old;Point &Point:operator -()臂品#p嘴品献疗嘴品H/p_x-；_y-;return *this;Point Point:operator -(int)Point old=*this;-(*this);return old;void main()Point point(15,20);cout初始坐标：;point.disypaly();coutpoi

4、nt+ 坐标：;(point+).disypaly();cout+point 坐标：;(+point).disypaly();coutPoint- 坐标:;(point-).disypaly();cout(15,20 to continueress anuPo int坐式C: Prof ra FilesMicrosoft Visual St.1 s s :一:e 4呻际标际k名称任务清单实验8-2多态性2指导教师日期报告书场景声明一个车 (vehicle)基类，具有Run、Stop等成员函数，由此派生出自行车(bicycle)类、汽车(motorcar)类，从 bicycle和 motorca

5、r派生出摩托车( motorcycle )类，它们都 有Run、Stop等成员函数。观察虚函数的作用。实验方法编写程序声明一个车( vehicle)基类，具有Run、Stop等成员函数，由此派生出自行车(bicycle )类、汽车(motorcar )类，从 bicycle 和 motorcar 派生出摩托车 (motorcycle ) 类，它们都有 Run、Stop等成员函数。 在main ()函数中声明 vehicle、bicycle、motorcar motorcycle的对象，调用其 Run ()、Stop ()函数，观察其执行情况。再分别用vehicle类型的指针来调用这几个对象的成

6、员函数，看看能否成功；把Run ()、Stop ()声明为虚函数，再试试看。程序名：lab8_2.cpp实验预估时间35分钟实验结果#includeusing namespace std;class vehiclepublic:virtual void Run()臂品#p嘴品献疗嘴品H/pcout vehicle Run:display() endl; virtual void Stop() cout vehicle Stop:display() endlendl; ；class bicycle: virtual public vehiclepublic:void Run() cout bic

7、ycle Run:display() endl; void Stop() cout bicycle Stop:display() endlendl; ；class motorcar:virtual public vehiclepublic:void Run() cout motorcar Run:display() endl; void Stop()一 cout motorcar Stop:display() endlendl;；class motorcycle: public bicycle,public motorcarpublic:void Run() cout motorcycle R

8、un:display() endl;void Stop()cout motorcycle Stop:display() endlRun();prt-Stop();void main()vehicle vehicle1,*p;bicycle bicycle1;motorcar motorcar1;motorcycle motorcycle1;p=&vehicle1;fun(p);p=&bicycle1;fun(p);p=&motorcar1;fun(p);科品娘川嘴品丽川嘴品丽川p=&motorcycle1;fun(p)；#includeusing namespace std;class veh

9、iclepublic:virtual void Run() cout vehicle Run:display() endl;virtual void Stop() cout vehicle Stop:display() endlendl; ;class bicycle: virtual public vehiclepublic:void Run() cout bicycle Run:display() endl;void Stop() cout bicycle Stop:display() endlendl;；class motorcar:virtual public vehiclepubli

10、c:void Run() cout motorcar Run:display() endl;void Stop() cout motorcar Stop:display() endlendl; ;class motorcycle: public bicycle,public motorcarpublic:void Run()cout motorcycle Run:display() endl;臂品#p嘴品丽川嘴品H/pvoid Stop() cout motorcycle Stop:display() endlendl;； void main() vehicle vehiclel;vehicle1.Run();vehicle1.Stop();bi