C++ Qt day2

自己封装一个矩形类(Rect)，拥有私有属性:宽度(width)、高度(height)，

定义公有成员函数:

初始化函数:void init(int w, int h)

更改宽度的函数:set_w(int w)

更改高度的函数:set_h(int h)

输出该矩形的周长和面积函数:void show()

#include <iostream>

using namespace std;

class Rect{
private:int width;

private:int height;

public:void init(int w,int h)
    {
        width=w;
        height=h;
        show();
    }

public:void set_w(int w)
    {
        width=w;
    }

public:void set_h(int h)
    {
        height=h;
    }

public:void show()
    {
        cout << "周长：" << 2*(height+width) << endl;
        cout << "面积：" << height*width << endl;
    }
};

int main()
{
    Rect rect;
    int width,height;
    cout << "请输入宽：";
    cin>>width;

    cout << "请输入高：";
    cin>>height;

    rect.init(width,height);
    cout << "更改宽：";
    cin>>width;

    rect.set_w(width);
    cout << "更改高：";
    cin>>height;

    rect.set_h(height);
    rect.init(width,height);

    return 0;
}