C++Day2

#include <iostream>

using namespace std;


class Rect
{
private:
    int width;
    int height;
public:
    void init(int w,int h)
    {
        width = w;
        height = h;
    }
    void set_w(int w)
    {
        width = w;
    }
    void set_h(int h)
    {
        height = h;
    }
    void show()
    {
        cout << "矩形的周长为：" << (width + height) * 2 << endl;
        cout << "矩形的面积为：" << width * height << endl;
    }
};
int main()
{
   Rect r1;
   r1.init(15,20);
   r1.show();
   r1.set_h(5);
   r1.set_w(8);
   r1.show();
    return 0;
}