#include<iostream>
using namespace std;
class area
{
public:
area(int l,int w){length=l;width=w;cout<<"调用构造函数,设置长和宽:"<<length<<"\t"<<width<<endl;}
~area(){cout<<"调用析构函数释放内存,此时长和宽:"<<length<<"\t"<<width<<endl;}
int get(){return length*width;}
void set(int l,int w){length=l;width=w;}
private:
int length,width;
};
int main()
{
area one[4]={area(10,10),area(13,34),area(20,30),area(40,40)};
cout<<one[0].get()<<endl;
one[0].set(30,40);
cout<<one[0].get()<<endl;
cout<<one[1].get()<<endl;
cout<<one[2].get()<<endl;
cout<<one[3].get()<<endl;
return 0;
}