C语言开发的酒店管理系统

好的，酒店管理系统一般包括客房管理、订单管理、财务管理等模块，下面是一个简单的C语言实现的酒店管理系统的示例：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_ROOMS 20           //最大房间数
#define MAX_NAME_LENGTH 20     //客户名字最大长度
#define MAX_ORDERS 100         //最大订单数

//定义订单结构体
typedef struct {
    int room_number;           //房间号
    char customer_name[MAX_NAME_LENGTH];  //客户名字
    int days;                  //入住天数
    int price;                 //房费
} Order;

//定义房间结构体
typedef struct {
    int number;                 //房间号
    int price;                  //房间价格
    int is_occupied;            //是否被占用
    char customer_name[MAX_NAME_LENGTH];  //客户名字
} Room;

//初始化房间
void init_rooms(Room* rooms, int n) {
    int i;
    for (i = 0; i < n; i++) {
        rooms[i].number = i + 1;
        rooms[i].price = 100;
        rooms[i].is_occupied = 0;
        strcpy(rooms[i].customer_name, "");
    }
}

//打印房间信息
void print_rooms(Room* rooms, int n) {
    int i;
    printf("房间信息：\n");
    for (i = 0; i < n; i++) {
        printf("房间号：%d，价格：%d，是否占用：%s，客户名字：%s\n", 
               rooms[i].number, rooms[i].price, rooms[i].is_occupied ? "是" : "否", rooms[i].customer_name);
    }
}

//查找房间
Room* find_room(Room* rooms, int n, int room_number) {
    int i;
    for (i = 0; i < n; i++) {
        if (rooms[i].number == room_number)
            return &rooms[i];
    }
    return NULL;
}

//添加订单
void add_order(Order* orders, int* count, int room_number, char* customer_name, int days, int price) {
    orders[*count].room_number = room_number;
    strcpy(orders[*count].customer_name, customer_name);
    orders[*count].days = days;
    orders[*count].price = price;
    (*count)++;
}

//打印订单信息
void print_orders(Order* orders, int count) {
    int i;
    printf("订单信息：\n");
    for (i = 0; i < count; i++) {
        printf("房间号：%d，客户名字：%s，入住天数：%d，房费：%d\n", 
               orders[i].room_number, orders[i].customer_name, orders[i].days, orders[i].price);
    }
}

//计算订单总金额
int calculate_total_price(Order* orders, int count) {
    int i, total_price = 0;
    for (i = 0; i < count; i++) {
        total_price += orders[i].price;
    }
    return total_price;
}

int main() {
    Room rooms[MAX_ROOMS];    //房间数组
    int n = 10;               //房间数
    Order orders[MAX_ORDERS]; //订单数组
    int order_count = 0;      //订单数
    int choice = 0, room_number, days, price;
    char customer_name[MAX_NAME_LENGTH];

    init_rooms(rooms, n);
    while (1) {
        printf("\n请选择操作：\n");
        printf("1. 查看房间信息\n");
        printf("2. 预定房间\n");
        printf("3. 查看订单信息\n");
        printf("4. 查看总金额\n");
        printf("5. 退出\n");
        scanf("%d", &choice);

        switch (choice) {
        case 1:
            print_rooms(rooms, n);
            break;
        case 2:
            printf("请输入房间号：");
            scanf("%d", &room_number);
            printf("请输入客户名字：");
            scanf("%s", customer_name);
            printf("请输入入住天数：");
            scanf("%d", &days);
            Room* room = find_room(rooms, n, room_number);
            if (room == NULL) {
                printf("房间不存在！\n");
            }
            else if (room->is_occupied) {
                printf("房间已被占用！\n");
            }
            else {
                room->is_occupied = 1;
                strcpy(room->customer_name, customer_name);
                price = days * room->price;
                add_order(orders, &order_count, room_number, customer_name, days, price);
                printf("预定成功！\n");
            }
            break;
        case 3:
            print_orders(orders, order_count);
            break;
        case 4:
            printf("总金额：%d\n", calculate_total_price(orders, order_count));
            break;
        case 5:
            exit(0);
        default:
            printf("选择无效！\n");
            break;
        }
    }
    return 0;
}

这只是一个简单的示例，实际的酒店管理系统需要更多的功能，比如客户管理、员工管理、报表统计等等。