用单链表实现宾馆客房管理系统中计算各类客房收入情况，按楼层统计没有入住的客房数 源代码

以下是用单链表实现宾馆客房管理系统中计算各类客房收入情况，按楼层统计没有入住的客房数的示例代码（C++实现）：

#include <iostream>
using namespace std;

// 客房类型
enum RoomType {
    SINGLE_ROOM = 1,
    STANDARD_ROOM,
    DELUXE_ROOM,
    PRESIDENTIAL_ROOM
};

// 客房信息
struct Room {
    int number; // 客房号
    RoomType type; // 客房类型
    bool isOccupied; // 是否入住
    int daysOccupied; // 入住天数
    double price; // 客房单价
};

// 节点
struct Node {
    Room data; // 数据域
    Node* next; // 指针域
};

// 客房链表
class RoomList {
public:
    // 构造函数
    RoomList() {
        head = new Node();
        head->next = nullptr;
    }

    // 添加客房
    void addRoom(Room room) {
        Node* p = head;
        while (p->next != nullptr) {
            p = p->next;
        }
        Node* newNode = new Node();
        newNode->data = room;
        newNode->next = nullptr;
        p->next = newNode;
    }

    // 计算各类客房收入情况
    double calculateIncome(RoomType type) {
        double totalIncome = 0.0;
        Node* p = head->next;
        while (p != nullptr) {
            if (p->data.type == type && p->data.isOccupied) {
                totalIncome += p->data.price * p->data.daysOccupied;
            }
            p = p->next;
        }
        return totalIncome;
    }

    // 按楼层统计没有入住的客房数
    int countUnoccupiedRooms(int floor) {
        int count = 0;
        Node* p = head->next;
        while (p != nullptr) {
            if (p->data.number / 100 == floor && !p->data.isOccupied) {
                count++;
            }
            p = p->next;
        }
        return count;
    }

private:
    Node* head; // 头指针
};

int main() {
    // 初始化客房链表
    RoomList roomList;
    roomList.addRoom({101, SINGLE_ROOM, true, 3, 300.0});
    roomList.addRoom({102, SINGLE_ROOM, true, 2, 300.0});
    roomList.addRoom({103, SINGLE_ROOM, false, 0, 300.0});
    roomList.addRoom({201, STANDARD_ROOM, true, 4, 450.0});
    roomList.addRoom({202, STANDARD_ROOM, false, 0, 450.0});
    roomList.addRoom({203, STANDARD_ROOM, false, 0, 450.0});
    roomList.addRoom({301, DELUXE_ROOM, true, 5, 600.0});
    roomList.addRoom({302, DELUXE_ROOM, true, 1, 600.0});
    roomList.addRoom({303, DELUXE_ROOM, false, 0, 600.0});
    roomList.addRoom({401, PRESIDENTIAL_ROOM, false, 0, 1500.0});
    roomList.addRoom({402, PRESIDENTIAL_ROOM, false, 0, 1500.0});
    roomList.addRoom({403, PRESIDENTIAL_ROOM, false, 0, 1500.0});

    // 计算各类客房收入情况
    cout << "Single Room Income: " << roomList.calculateIncome(SINGLE_ROOM) << endl;
    cout << "Standard Room Income: " << roomList.calculateIncome(STANDARD_ROOM) << endl;
    cout << "Deluxe Room Income: " << roomList.calculateIncome(DELUXE_ROOM) << endl;
    cout << "Presidential Room Income: " << roomList.calculateIncome(PRESIDENTIAL_ROOM) << endl;

    // 按楼层统计没有入住的客房数
    cout << "Unoccupied Rooms on Floor 1: " << roomList.countUnoccupiedRooms(1) << endl;
    cout << "Unoccupied Rooms on Floor 2: " << roomList.countUnoccupiedRooms(2) << endl;
    cout << "Unoccupied Rooms on Floor 3: " << roomList.countUnoccupiedRooms(3) << endl;
    cout << "Unoccupied Rooms on Floor 4: " << roomList.countUnoccupiedRooms(4) << endl;

    return 0;
}