教案作业综合.docxVIP

类的继承与派生1、定义一个车基类，具有maxspeed,weight,color等成员变量，成员函数有Run,Stop,由此派生出自行车类和汽车类。自行车类有：height，汽车类有：seatnumber等属性，然后bicycle,car类中派生出摩托车类。把继承的过程中车类设为虚基类#includeiostreamusing namespace std;class Car{public:Run(){coutThe car is runingendl;}Stop(){coutThe car has been stopedendl;}private:int maxspeed, weight, color ;};class Bicycle: virtual public Car{public:show(){coutThis is the number of Bicycleendl;}};class Bus: virtual public Car{public:show(){coutThis is the number of Busendl;}};class Motorcycle: public Bicycle, public Bus{public:show(){coutThis is the number of Motorcycleendl;}};int main(){Motorcycle obj, *p=obj;obj.show();//访问派生类成员obj.Run();//访问基类成员p-Stop();//访问基类成员obj.Bicycle::show();//作用域分辨符标识，访问Bicycle类成员p-Bus::show();//作用域分辨符标识，访问Bus类成员return 0;}2、设计两个类点point和circle，要求：（1）点具有坐标x，y属性，获取属性和移动等方法。（2）圆从点派生，具有半径r属性，获取属性和计算圆面积等方法测试这个类。#include iostream#include cmath#define PI 3.1415926using namespace std;class Point{public:Point(float x){}Point(float xx, float yy){x=xx;y=yy;}float GetX() {return x;}float GetY() {return y;}void Move(){}private:float x, y;};class Circle: public Point{public:Circle(float r):Point(r), radius(r){}Circle(float x, float y):Point(x, y){}float Circumference(){ return 2 * PI * radius; } float Area(){ return PI * radius * radius; } private: float radius; };void calculate(){Circle obj2(2, 4);Circle obj3(5, 9);double x=static_castdouble(obj3.GetX()-obj2.GetX());double y=static_castdouble(obj3.GetY()-obj2.GetY());double R=sqrt(x*x+y*y);coutThe circumference of the Circle is: 2 * PI * Rendl;coutThe area of the Circle is: PI * R * Rendl;}int main(){coutmethod1:endl;Circle obj1(5.5);coutThe circumference of the Circle is: obj1.Circumference()endl;coutThe area of the Circle is: obj1.Area()endlendlendl;coutmethod2:endl;calculate();return 0;}例7-6、多继承同名隐藏举例（1）#include iostreamusing namespace std;class Base1{public:int var;void fun(){coutMember of Base1endl;}};class Base2{public:int var;void fun(){coutMember of Base2endl;}};class Derived:public Base1, public B