大家帮忙修改程序的错误#includeiostreamusing namespace std;con

网友回答

帮你改了一下下面注释的是有错的地方：
#include
using namespace std;
const int CN=35; //需要加上类型
const int AN=20; //同上
class rectangle
{public:
rectangle();
rectangle(int,int);
int circumference();
int area();
virtual void display();
protected:
int len;
int high;
}; //分号掉了rectangle::rectangle(){len=0;high=0;}rectangle::rectangle(int l,int h)
{len=l;
high=h;
}int rectangle::circumference()
{return (2*len+2*high);
}int rectangle::area()
{return (len*high);
}void rectangle::display()
{cout