21天学通c++之第二周 指针 8.10 使用指向const对象的指针

#include <iostream>
using namespace std;
class Rectangle
{
public:
 Rectangle();
 ~Rectangle();
 void setlength(int length){itslength=length;}
 int getlength()const{return itslength;}
 void setwidth(int width){itswidth=width;}
 int getwidth()const{return itswidth;}
private:
 int itslength;
 int itswidth;
};
Rectangle::Rectangle()
{
 itswidth=5;
 itslength=10;
}
Rectangle::~Rectangle()
{

}
int main()
{
 Rectangle* prect=new Rectangle;
 const Rectangle * pconstrect=new Rectangle;
 Rectangle * const
}