2.定义一个房间类(CRoom),要求拥有的私有数据成员:门牌号(m_id),门(m_pdoor),窗户(m_ window)。其中，门是门类(CDoor)定义的对象指针成员，窗户是窗户类(CWindow)定义的对象成员。要求:每个类单独定义在两个文件中(.h 和.cpp),房间类包括:构造函数、析构函数，InstallDoor 成员函数能够实现安装门(new CDoor)的功能。要求窗户类的构造函数必须带参数，CDoor类具有宽度，高度及修改宽度高度功能，CWindow类具有宽度，高度及修改宽度高度功能。设计好后测试。

CRoom.h文件：

#ifndef CROOM_H
#define CROOM_H

#include "CDoor.h"
#include "CWindow.h"

class CRoom {
private:
    int m_id;
    CDoor* m_pdoor;
    CWindow m_window;

public:
    CRoom(int id);
    ~CRoom();
    void InstallDoor(int width, int height);
};

#endif // CROOM_H

CRoom.cpp文件：

#include "CRoom.h"

CRoom::CRoom(int id) {
    m_id = id;
    m_pdoor = nullptr;
}

CRoom::~CRoom() {
    if (m_pdoor != nullptr) {
        delete m_pdoor;
    }
}

void CRoom::InstallDoor(int width, int height) {
    if (m_pdoor != nullptr) {
        delete m_pdoor;
    }
    m_pdoor = new CDoor(width, height);
}

CDoor.h文件：

#ifndef CDOOR_H
#define CDOOR_H

class CDoor {
private:
    int m_width;
    int m_height;

public:
    CDoor(int width, int height);
    ~CDoor();
    void SetWidth(int width);
    void SetHeight(int height);
};

#endif // CDOOR_H

CDoor.cpp文件：

#include "CDoor.h"

CDoor::CDoor(int width, int height) {
    m_width = width;
    m_height = height;
}

CDoor::~CDoor() {}

void CDoor::SetWidth(int width) {
    m_width = width;
}

void CDoor::SetHeight(int height) {
    m_height = height;
}

CWindow.h文件：

#ifndef CWINDOW_H
#define CWINDOW_H

class CWindow {
private:
    int m_width;
    int m_height;

public:
    CWindow(int width, int height);
    ~CWindow();
    void SetWidth(int width);
    void SetHeight(int height);
};

#endif // CWINDOW_H

CWindow.cpp文件：

#include "CWindow.h"

CWindow::CWindow(int width, int height) {
    m_width = width;
    m_height = height;
}

CWindow::~CWindow() {}

void CWindow::SetWidth(int width) {
    m_width = width;
}

void CWindow::SetHeight(int height) {
    m_height = height;
}

测试代码：

#include <iostream>
#include "CRoom.h"

using namespace std;

int main() {
    CRoom room(101);
    room.InstallDoor(80, 200);

    cout << "Door size: " << endl;
    cout << "Width: " << room.m_pdoor->GetWidth() << endl;
    cout << "Height: " << room.m_pdoor->GetHeight() << endl;

    return 0;
}