cpp
#include <iostream>
using namespace std;
class Rect
{
private:
int width;
int hight;
public:
void init(int w, int h);
void set_w(int w);
void set_h(int h);
void show();
};
void Rect::init(int w, int h)
{
width = w;
hight = h;
}
void Rect::set_w(int w)
{
width = w;
}
void Rect::set_h(int h)
{
hight = h;
}
void Rect::show()
{
cout << "width = " << width << "\t hight = " << hight << "\t周长 = " << 2*(width+hight) << endl;
cout << "width = " << width << "\t hight = " << hight << "\t面积 = " << width*hight << endl;
}
int main()
{
Rect re;
re.init(4, 5);
re.show();
re.set_h(10);
re.show();
re.set_w(10);
re.show();
return 0;
}