用c语言写一个学生宿舍管理系统，要求功能:实现简单的学生宿舍基本信息管理，宿舍的基本信息包括楼号、房间号、面积、所容纳人数、已入住人数等。 1.设计简单的菜单，能够进行系统功能选择; 2.实现信息的录入功能; 3.在已有信息的基础上添加新的记录; 4.删除指定房间号的记录; . 5.修改指定房间号的记录; 6.实现信息的浏览功能; 7.按房间号查询功能; 8.按已入住人数排序功能;

好的，这是一个比较复杂的问题，我会尽可能地回答你。

首先，为了实现这个学生宿舍管理系统，我们需要设计一个数据结构来存储宿舍的基本信息，例如楼号、房间号、面积、所容纳人数、已入住人数等。以下是一个可能的数据结构示例：

struct dormitory {
    int building_number;    // 楼号
    int room_number;        // 房间号
    float area;             // 面积
    int total_capacity;     // 所容纳人数
    int occupied_capacity;  // 已入住人数
};

接下来，我们需要设计一个菜单来实现系统功能的选择。以下是一个可能的菜单示例：

void display_menu(void) {
    printf("1. 录入宿舍信息\n");
    printf("2. 添加宿舍信息\n");
    printf("3. 删除宿舍信息\n");
    printf("4. 修改宿舍信息\n");
    printf("5. 浏览宿舍信息\n");
    printf("6. 按房间号查询宿舍信息\n");
    printf("7. 按已入住人数排序宿舍信息\n");
    printf("8. 退出程序\n");
}

接下来，我们需要实现每个菜单选项的功能：

1. 录入宿舍信息

void input_dormitory_info(struct dormitory *d) {
    printf("请输入宿舍信息：\n");
    printf("楼号：");
    scanf("%d", &d->building_number);
    printf("房间号：");
    scanf("%d", &d->room_number);
    printf("面积：");
    scanf("%f", &d->area);
    printf("所容纳人数：");
    scanf("%d", &d->total_capacity);
    printf("已入住人数：");
    scanf("%d", &d->occupied_capacity);
}

2. 添加宿舍信息

void add_dormitory_info(struct dormitory *dormitories, int *count) {
    input_dormitory_info(&dormitories[*count]);
    (*count)++;
}

3. 删除宿舍信息

void delete_dormitory_info(struct dormitory *dormitories, int *count, int room_number) {
    int index = find_dormitory_by_room_number(dormitories, *count, room_number);
    if (index == -1) {
        printf("未找到该房间号的宿舍信息！\n");
        return;
    }
    for (int i = index; i < *count - 1; i++) {
        dormitories[i] = dormitories[i + 1];
    }
    (*count)--;
}

4. 修改宿舍信息

void modify_dormitory_info(struct dormitory *dormitories, int count, int room_number) {
    int index = find_dormitory_by_room_number(dormitories, count, room_number);
    if (index == -1) {
        printf("未找到该房间号的宿舍信息！\n");
        return;
    }
    input_dormitory_info(&dormitories[index]);
}

5. 浏览宿舍信息

void display_all_dormitory_info(struct dormitory *dormitories, int count) {
    printf("楼号\t房间号\t面积\t所容纳人数\t已入住人数\n");
    for (int i = 0; i < count; i++) {
        printf("%d\t%d\t%f\t%d\t\t%d\n", dormitories[i].building_number, dormitories[i].room_number, dormitories[i].area, dormitories[i].total_capacity, dormitories[i].occupied_capacity);
    }
}

6. 按房间号查询宿舍信息

void display_dormitory_info_by_room_number(struct dormitory *dormitories, int count, int room_number) {
    int index = find_dormitory_by_room_number(dormitories, count, room_number);
    if (index == -1) {
        printf("未找到该房间号的宿舍信息！\n");
        return;
    }
    printf("楼号\t房间号\t面积\t所容纳人数\t已入住人数\n");
    printf("%d\t%d\t%f\t%d\t\t%d\n", dormitories[index].building_number, dormitories[index].room_number, dormitories[index].area, dormitories[index].total_capacity, dormitories[index].occupied_capacity);
}

int find_dormitory_by_room_number(struct dormitory *dormitories, int count, int room_number) {
    for (int i = 0; i < count; i++) {
        if (dormitories[i].room_number == room_number) {
            return i;
        }
    }
    return -1;
}

7. 按已入住人数排序宿舍信息

void sort_dormitory_info_by_occupied_capacity(struct dormitory *dormitories, int count) {
    for (int i = 0; i < count - 1; i++) {
        for (int j = 0; j < count - 1 - i; j++) {
            if (dormitories[j].occupied_capacity > dormitories[j + 1].occupied_capacity) {
                struct dormitory temp = dormitories[j];
                dormitories[j] = dormitories[j + 1];
                dormitories[j + 1] = temp;
            }
        }
    }
}

最后，我们可以在主函数中调用菜单和对应的函数来实现整个程序的功能：

int main(void) {
    struct dormitory dormitories[MAX_DORMITORY_COUNT];
    int count = 0;

    while (1) {
        display_menu();

        int choice;
        printf("请选择功能：");
        scanf("%d", &choice);

        switch (choice) {
            case 1:  // 录入宿舍信息
                add_dormitory_info(dormitories, &count);
                break;
            case 2:  // 添加宿舍信息
                add_dormitory_info(dormitories, &count);
                break;
            case 3:  // 删除宿舍信息
                int room_number;
                printf("请输入要删除的房间号：");
                scanf("%d", &room_number);
                delete_dormitory_info(dormitories, &count, room_number);
                break;
            case 4:  // 修改宿舍信息
                printf("请输入要修改的房间号：");
                scanf("%d", &room_number);
                modify_dormitory_info(dormitories, count, room_number);
                break;
            case 5:  // 浏览宿舍信息
                display_all_dormitory_info(dormitories, count);
                break;
            case 6:  // 按房间号查询宿舍信息
                printf("请输入要查询的房间号：");
                scanf("%d", &room_number);
                display_dormitory_info_by_room_number(dormitories, count, room_number);
                break;
            case 7:  // 按已入住人数排序宿舍信息
                sort_dormitory_info_by_occupied_capacity(dormitories, count);
                display_all_dormitory_info(dormitories, count);
                break;
            case 8:  // 退出程序
                return 0;
            default:
                printf("无效的选项！\n");
                break;
        }
    }

    return 0;
}

希望这个答案能帮助到你！