第十三周实验报告4

#include<iostream>   
#include<Cmath>   
using namespace std;
const double pi=3.1415926;  
class CSolid //定义抽象基类
{
public:
	virtual double superficial_areas()=0;//表面积 
    virtual double volume()=0;    //体积   
};
  
class CCube: public CSolid  //利用抽象基类定义正方体类   
{  
public:  
    CCube(double CCube_long);//构造函数   
    ~CCube(){} 
	double superficial_areas();
	double volume();
private:  
    double CCube_long;  
};

class CBall: public CSolid    //利用抽象基类定义球体类     
{  
public:  
    CBall(double CBall_long);//构造函数   
	~CBall(){}  
	double superficial_areas();
	double volume();  
private:  
    double CBall_long;  
}; 

class CCylinder: public CSolid  //利用抽象基类定义圆柱体类   
{  
public:  
    CCylinder(double CCylinder_bottom,double CCylinder_high); //构造函数   
	~CCylinder(){}  
    double superficial_areas();
	double volume(); 
private:  
    double CCylinder_bottom;
	double CCylinder_high;  
};
CCube::CCube(double CCube_long)//构造函数
{
	this->CCube_long=CCube_long;
}
double CCube::superficial_areas()
{
return (6*CCube_long*CCube_long);
}
double CCube::volume()
{
	return (CCube_long*CCube_long*CCube_long);
}
CBall::CBall(double CBall_long)
{
	this->CBall_long=CBall_long;
}
double CBall::superficial_areas()
{
	return (4*pi*CBall_long*CBall_long);
}
double CBall::volume()
{
	return (4*pi*CBall_long*CBall_long*CBall_long/3);
}
CCylinder::CCylinder(double CCylinder_bottom,double CCylinder_high)
{
	this->CCylinder_bottom=CCylinder_bottom;
	this->CCylinder_high=CCylinder_high;
}
double CCylinder::superficial_areas() 
{
	return (2*pi*CCylinder_bottom*CCylinder_bottom+2*pi*CCylinder_bottom*CCylinder_high);
}
double CCylinder::volume()
{
	return (pi*CCylinder_bottom*CCylinder_bottom*CCylinder_high);
}
int main()
{
	CCube CCube1(12.6);    //建立CCube类对象c1,参数为正方体边长
	CBall CBall1(4.5);       //建立CBall1类对象CBall1,参数为球的半径
	CCylinder CCylinder1(4.5,8.4);    //建立CCylinder类对象CCylinder1，参数为圆柱体的半径和高
	CSolid *p;
	p=&CCube1;
	cout<<"totol of CCube areas="<<p->superficial_areas()<<endl;   //输出表面积
	cout<<"totol of CCube volume="<<p->volume()<<endl;   //输出体积
	p=&CBall1;
	cout<<"totol of CBall areas="<<p->superficial_areas()<<endl;   //输出表面积
	cout<<"totol of CBall volume="<<p->volume()<<endl;   //输出体积
	p=&CCylinder1;
	cout<<"totol of CCylinder areas="<<p->superficial_areas()<<endl;   //输出表面积
	cout<<"totol of CCylinder volume="<<p->volume()<<endl;   //输出体积
	system("pause");
	return 0;
}