创建一个较为复杂的c语言的酒店管理系统代码

以下是一个简单的C语言酒店管理系统代码，包含了房间预定、入住、退房等功能。请注意，这只是一个简单的示例，实际的酒店管理系统可能需要更多的功能和数据结构。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_ROOMS 100 // 最大房间数

// 房间结构体
typedef struct {
    int room_number; // 房间号
    int is_booked; // 是否已预定
    int is_occupied; // 是否已入住
    char guest_name[50]; // 入住客人姓名
} Room;

// 初始化所有房间为未预定和未入住状态
void init_rooms(Room rooms[]) {
    for (int i = 0; i < MAX_ROOMS; i++) {
        rooms[i].room_number = i + 1;
        rooms[i].is_booked = 0;
        rooms[i].is_occupied = 0;
        strcpy(rooms[i].guest_name, "");
    }
}

// 显示所有房间的状态
void show_room_status(Room rooms[]) {
    printf("房间号\t状态\t\t客人姓名\n");
    for (int i = 0; i < MAX_ROOMS; i++) {
        printf("%d\t", rooms[i].room_number);
        if (rooms[i].is_booked) {
            printf("已预定\t\t");
        } else if (rooms[i].is_occupied) {
            printf("已入住\t\t%s\n", rooms[i].guest_name);
        } else {
            printf("未预定未入住\n");
        }
    }
}

// 预定房间
void book_room(Room rooms[]) {
    int room_number;
    printf("请输入要预定的房间号：");
    scanf("%d", &room_number);
    if (room_number < 1 || room_number > MAX_ROOMS) {
        printf("房间号无效！\n");
        return;
    }
    if (rooms[room_number - 1].is_booked || rooms[room_number - 1].is_occupied) {
        printf("该房间已被预定或入住！\n");
        return;
    }
    rooms[room_number - 1].is_booked = 1;
    printf("预定成功！\n");
}

// 入住房间
void check_in(Room rooms[]) {
    int room_number;
    printf("请输入要入住的房间号：");
    scanf("%d", &room_number);
    if (room_number < 1 || room_number > MAX_ROOMS) {
        printf("房间号无效！\n");
        return;
    }
    if (rooms[room_number - 1].is_occupied) {
        printf("该房间已被入住！\n");
        return;
    }
    if (!rooms[room_number - 1].is_booked) {
        char answer;
        printf("该房间未被预定，是否继续入住？(y/n)");
        scanf(" %c", &answer);
        if (answer != 'y') {
            return;
        }
    }
    char guest_name[50];
    printf("请输入入住客人的姓名：");
    scanf("%s", guest_name);
    strcpy(rooms[room_number - 1].guest_name, guest_name);
    rooms[room_number - 1].is_booked = 0;
    rooms[room_number - 1].is_occupied = 1;
    printf("入住成功！\n");
}

// 退房
void check_out(Room rooms[]) {
    int room_number;
    printf("请输入要退房的房间号：");
    scanf("%d", &room_number);
    if (room_number < 1 || room_number > MAX_ROOMS) {
        printf("房间号无效！\n");
        return;
    }
    if (!rooms[room_number - 1].is_occupied) {
        printf("该房间未被入住！\n");
        return;
    }
    printf("客人%s已退房，房间已清空！\n", rooms[room_number - 1].guest_name);
    rooms[room_number - 1].is_occupied = 0;
    strcpy(rooms[room_number - 1].guest_name, "");
}

int main() {
    Room rooms[MAX_ROOMS];
    init_rooms(rooms);
    int choice;
    while (1) {
        printf("\n请选择操作：\n");
        printf("1. 显示所有房间状态\n");
        printf("2. 预定房间\n");
        printf("3. 入住房间\n");
        printf("4. 退房\n");
        printf("5. 退出程序\n");
        scanf("%d", &choice);
        switch (choice) {
            case 1:
                show_room_status(rooms);
                break;
            case 2:
                book_room(rooms);
                break;
            case 3:
                check_in(rooms);
                break;
            case 4:
                check_out(rooms);
                break;
            case 5:
                exit(0);
            default:
                printf("无效的选项！\n");
        }
    }
    return 0;
}