CPP_D2

①XMind

②矩形计算（代码）

//SqrCalc.cpp

//矩形计算

#include

using namespace std;

class Rect

{

private:

    int wight;

    int high;

    int pre;

    int area;

public:

    void init(int wight, int hight);

    int set_w();

    int set_h();

    void show();

};

void Rect :: init(int wight, int hight)

{

    this-> wight = wight;

    this-> high = hight;

}

int Rect :: set_w()

{

    cout << "请输入宽度w= ";

    cin >> wight;

    return wight;

}

int Rect :: set_h()

{

    cout << "请输入高度h= ";

    cin >> high ;

    return high;

}

void Rect :: show()

{  

pre = (wight+high)*2;

   area = wight*high;

   cout << "该矩形的周长： " << pre <

   cout << "该矩形的面积：" << area << endl;

}

void main()

{

    int w=0, h=0;

Rect r;

    w = r.set_w();

h = r.set_h();

    r.init(w, h);

r.show();

    return ;

}

②矩形计算（输出）