程序代码：

 #include<iostream>
using namespace std;
class Rectangle
{

 public:
  Rectangle();
  Rectangle(int,int);
  ~Rectangle();
  void Draw();
  int Rect();

 private:
  int itslength;
  int itsheight;
};
Rectangle::Rectangle()
{

 itslength=8;

 itsheight=6;
}
Rectangle::Rectangle(int length,int height)
{

 itslength=length;

 itsheight=height;
}
Rectangle::~Rectangle()
{

 cout <<"End......."<<"\n";
}
void Rectangle::Draw()
{

 for(int i=1;i<=itsheight;i++)

 {
  for(int j=1;j<=itslength;j++)
   cout<<"*";
  cout<<"\n";

 }
}
int Rectangle::Rect()
{

 cout<<"面积="<<itslength*itsheight<<"\n";

 cout<<"周长=" <<2*(itslength+itsheight)<<"\n";
}
int main(void)
{

 Rectangle rect1;

 Rectangle rect2(20,15);

 rect1.Draw();

 rect1.Rect();

 rect2.Draw();

 rect2.Rect();

 getchar();

 return 0;
}