6.14

来源：互联网发布：国际常用期货交易软件编辑：程序博客网时间：2024/06/06 01:15
#include<iostream>using namespace std;const double pi=3.14;class container{protected:double r;public:container(double radius){r=radius;}virtual double surface_area()=0;virtual double volume()=0;};class cube:public container{public:cube(double radius):container(radius){};double surface_area(){return 6.0*r*r;};double  volume(){return r*r*r;}};class sphere:public container{public:sphere(double radius):container(radius){};double surface_area(){return 4*pi*r*r;};double  volume(){return pi*r*r*r*4/3;}};class cylinder:public container{protected:double h;public:cylinder(double radius,double high):container(radius){h=high;};double surface_area(){return 2*pi*r*(r+h);};double  volume(){return pi*r*r*h;}};int main(){container *p;cube cu(6.0);sphere sp(5.0);cylinder cy(5.0,6.0);p=&cu;cout<<"正方体的表面积为:"<<p->surface_area()<<endl;cout<<"正方体的体积为:"<<p->volume()<<endl;p=&sp;cout<<"球体的表面积为:"<<p->surface_area()<<endl;cout<<"球体的体积为:"<<p->volume()<<endl;p=&cy;cout<<"圆柱体的表面积为:"<<p->surface_area()<<endl;cout<<"圆柱体的体积为:"<<p->volume()<<endl;system("pause");return 0;}
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