第三周C++实验报告（4）

#include<iostream>
using namespace std;
class Box
{public:
    void get_value();
void display();
float volume();
float area();
 private:
float length;
float width;
float height;
};
void Box::get_value()

{

cout<<"请输入长、宽、高（ length,width,height）:";
cin>>length;
cin>>width;
cin>>height;
}
float Box::volume()
{
return(length*width*height);
}
float Box::area()
{
cout<<2*(width*height+length*width+length*height)<<endl;
return 0;
}
void Box::display()
{
cout<<volume()<<endl;
}
int main()
{
Box box1,box2,box3;
box1.get_value();
cout<<"volmue of box1 is ";
box1.display();
cout<<"area of box1 is ";
box1.area();
box2.get_value();
cout<<"volme of box2 is ";
box2.display();
cout<<"area of box2 is ";
box2.area();
box3.get_value();
cout<<"volme of box3 is ";
box3.display();
cout<<"area of box3 is ";
box3.area();
return 0;
}