容器类.txt

容器类的实现和定义

#include<iostream>
using namespace std;
class container
{
protected:
	double radius;
public:
	container(double radius)
	{
	 this->radius=radius;
	}
	virtual double surface_area()=0;
	virtual double volume()=0;
};
class cube:public container
{
public:
	cube(double radius):container(radius){}
	double surface_area()
	{
	 return radius*radius*6;
	}
	double volume()
	{
	 return radius*radius*radius;
	}
};
class sphere:public container
{
public:
	sphere(double radius):container(radius){}
	double surface_area()
	{
	 return 4*3.1416*radius*radius;
	}
	double volume()
	{
	 return 3.1416*radius*radius*radius*4/3;
	}
};
class cylinder:public container
{
	double height;
public:
	cylinder(double radius,double height):container(radius)
	{
	  this->height=height;
	}
	double surface_area()
	{
	 return 2*3.1416*radius*(radius+height);
	}
	double volume()
	{
	 return 3.1416*radius*radius*height;
	}
};
void main()
{
 container*p;
 cube obj1(10);
 sphere obj2(6);
 cylinder obj3(4,5);
 p=&obj1;
 cout<<"输出结果："<<endl;
 cout<<"正方体面积："<<p->surface_area()<<endl;
 cout<<"正方体体积："<<p->volume()<<endl;
 p=&obj2;
 cout<<"球体表面积："<<p->surface_area()<<endl;
 cout<<"球体体积："<<p->volume()<<endl;
 p=&obj3;
 cout<<"圆柱体表面积："<<p->surface_area()<<endl;
 cout<<"圆柱体体积："<<p->volume()<<endl;
}