8.2对象数组操作长方柱类

#include"iostream"using namespace std;class Bulk{public:Bulk(double x=1.0,double y=1.0,double z=1.0):length(x),width(y),heigth(z) {}void get_value();void display();private:double length;double width;double heigth;};void Bulk::get_value(){    cin>>length;    cin>>width;    cin>>heigth;}void Bulk::display(){    cout<<" 长方柱的体积为： "<<length*width*heigth<<endl;    cout<<"  长方柱的表面积为： "<<2*(length*width+length*heigth+width*heigth)<<endl;}int main(){Bulk b[5]={Bulk(2.3,4.5,6.7),Bulk(1.5,3.4),Bulk(10.5)};b[4].get_value();for(int i=0;i<5;i++){b[i].display();}return 0;}