main.cpp

这个是继承与派生的实验

//main.cpp
#include<iostream.h>
#include"cylinder.h"
#include"cone.h"
#include"ball.h"
void main()
{
	double radius;
    cout<<"请输入半径：";
	cin>>radius;
	circle s1(radius),*pt;
	ball b(radius);
	cout<<" 球的";
	s1.print();
	b.setA(radius);
	b.setV(radius);
	pt=&b;
	pt->print();
    double hight;
	cout<<"请输入圆柱的高 ";
	cin>>hight;
	cylinder cy(radius,hight);
	cout<<"圆柱的底面";
	s1.print();
	cy.setA(radius,hight);
	cy.setV(radius,hight);
	pt = &cy;
	pt->print();
    double angle;
	cout<<"请输入圆锥展开后圆心角的度数";
   	cin>>angle;
	cone co(radius,hight,angle);
	cout<<"圆锥的底面";
	s1.print();
	co.setA(radius,hight,angle);
	co.setV(radius,hight,angle);
	pt=&co;
	pt->print();
	 
}