cpp
复制代码
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<iostream>
#define MAX_BOOKS 10000
#define MAX_USERS 10000
using namespace std;
struct Book {
int book_id;
char title[100];
char author[100];
int available;
int total;
};
struct bb {
int bookid; //所借阅书籍的编号
bb* next; // 指向下一本借阅的书的指针
};
struct User {
int userid;
char name[15];
long long phone;
int bbn; // 借阅书数
bb* booklist; // 借阅的书：指向链表头结点的指针
User* next;
};
User* userslist = NULL;
int sum = 0;
struct Book books[MAX_BOOKS];
int num_books = 0;
int num_users = 0;
int choose();
int mainMenu();
int bookMenu();
void addbook();
void borrowbook();
void returnbook();
void searchbook();
void deletebook();
int book();
void readBook();
void writeBook();
int user();
void writeUser();
void readUser();
int main() {
while (1) {
int choice = mainMenu();
switch (choice) {
case 1:
book();
break;
case 2:
user();
break;
case 3:
exit(0);
break;
default:
printf("无效数字！\n");
//system("pause");
break;
}
}
}
int choose()
{
int choice = -1;
printf("输入选择：");
scanf("%d", &choice);
return choice;
}
//主系统
int mainMenu()
{
printf("\n****************************\n");
printf("* 图书馆系统 *\n");
printf("* 1.图书管理系统 *\n");
printf("* 2.会员管理系统 *\n");
printf("* 3. 退出系统 *\n");
printf("****************************\n");
return choose();
}
int bookMenu()
{
printf("\n**********************************\n");
printf("* 图书管理系统 *\n");
printf("* 1. 添加图书 *\n");
printf("* 2. 借阅图书 *\n");
printf("* 3. 归还图书 *\n");
printf("* 4. 查询图书 *\n");
printf("* 5. 删除图书 *\n");
printf("* 6. 保存修改 *\n");
printf("* 7. 返回主系统 *\n");
printf("* 8. 切换会员管理系统 *\n");
printf("* 9. 退出系统 *\n");
printf("**********************************\n");
return choose();
}
//添加图书
void addBook() {
// 检查是否已存在该书
int book_id, count;
char title[100];
char author[100];
printf("图书id：");
scanf("%d", &book_id);
printf("书名：");
scanf("%s", title);
printf("作者名：");
scanf("%s", author);
printf("添加数量：");
scanf("%d", &count);
if (count + sum > MAX_BOOKS)
{
printf("图书馆存储空间已满,无法添加！");
return;
}
for (int i = 0; i < num_books; i++) {
if (books[i].book_id == book_id) {
books[i].total += count;
books[i].available += count;
sum = sum + count;
printf("图书添加成功！");
return;
}
}
// 不存在则添加新书
books[num_books].book_id = book_id;
strcpy(books[num_books].title, title);
strcpy(books[num_books].author, author);
books[num_books].total = count;
books[num_books].available = count;
sum = sum + count;
num_books++;
printf("图书添加成功！");
return;
}
void borrowBook()
{
long long phone;
int bookid;
cout << "请输入借阅会员的手机号：";
cin >> phone;
User* c = userslist;
while (c != NULL && c->phone != phone)
{
c = c->next; // 寻找要借书的会员
}
if (c == NULL)
{
cout << "未找到该手机号对应的会员信息！" << endl;
return;
}
// 当会员借阅书籍数目达到上限时，提示借阅书籍已达上限
if (c->bbn >= 3) {
cout << "借阅书籍已达上限，无法再借阅更多书籍。" << endl;
return;
}
cout << "请输入要借阅图书的编号：";
cin >> bookid;
for (int i = 0; i < num_books; i++)
{
if (books[i].book_id == bookid)
{
if (books[i].available > 0)
{
books[i].available--;
printf("借阅成功\n");
sum--;
// 创建新的书籍节点
bb* newbook = new bb(); //newBook
newbook->bookid = bookid;
newbook->next = NULL;
if (c->bbn == 0)
{
c->booklist = newbook; // 如果之前未借过书，直接把新书籍节点设为书单的头
}
else
{
bb* cb = c->booklist; //currentBook
while (cb->next != NULL)
{
cb = cb->next; // 找到书单的末尾节点
}
cb->next = newbook; // 将新书籍节点插入到末尾节点之后
cb = cb->next;
cb->next = NULL;
}
c->bbn++;
}
else
{
printf("该书已全部借出\n");
}
return;
}
}
printf("未找到该书\n");
return;
}
//归还图书
void returnBook()
{
long long phone;
int book_id;
char title[100];
char author[100];
printf("请输入归还者的手机号：");
scanf("%lld", &phone);
User* c = userslist;
while (c != NULL && c->phone != phone)
{
c = c->next; // 寻找要借书的会员
}
if (c == NULL)
{
cout << "未找到该手机号对应的会员信息！" << endl;
return;
}
printf("图书id：");
scanf("%d", &book_id);
if ((sum + 1) > MAX_BOOKS)
{
printf("图书馆存储空间已满,无法添加！");
return;
}
for (int i = 0; i < num_books; i++)
{
if (books[i].book_id == book_id)
{
if (books[i].available < books[i].total)
{
books[i].available++;
sum++;
printf("归还成功\n");
bb* newbook = new bb(); //newBook
newbook->bookid = book_id;
newbook->next = NULL;
if (c->bbn == 0)
{
c->booklist = newbook; // 如果之前未借过书，直接把新书籍节点设为书单的头
}
else
{
bb* cb = c->booklist; //currentBook
while (cb->next != NULL)
{
cb = cb->next; // 找到书单的末尾节点
}
cb->next = newbook; // 将新书籍节点插入到末尾节点之后
cb = cb->next;
cb->next = NULL;
}
c->bbn++;
return;
}
else
{
printf("此书非待归还状态！\n");
return;
}
}
}
printf("未找到该书!");
}
//查找图书
void searchBook() {
char keyword[100];
int found = 0;
printf("输入查找信息(书名/作者): ");
scanf("%s", &keyword);
printf("查找结果:\n");
for (int i = 0; i < num_books; i++) {
if (strcmp(books[i].title, keyword) == 0 || strcmp(books[i].author, keyword) == 0)
{
printf("书名: %s, 作者: %s，可借阅数目：%d,图书总数：%d", books[i].title, books[i].author, books[i].available, books[i].total);
found = 1;
}
}
if (!found) {
printf("无符合要求图书！\n");
}
}
//删除图书
void deleteBook() {
char title[100];
char author[100];
int found = 0;
printf("输入要删除的书名: ");
scanf("%s", title);
printf("输入要删除图书的作者名: ");
scanf("%s", author);
for (int i = 0; i < num_books; i++) {
if (strcmp(books[i].title, title) == 0 && strcmp(books[i].author, author) == 0) {
for (int j = i; j < num_books - 1; j++) {
books[j] = books[j + 1];
}
found = 1;
break;
}
}
if (found) {
num_books--;
printf("图书删除成功！\n");
}
else {
printf("未找到要删除的图书！\n");
}
}
void writeBook()
{
FILE* fp = NULL;
fp = fopen("Book.txt", "w+");//覆盖写入文件
int i;
for (i = 0; i < num_books; i++) {
fprintf(fp, "%d %s %s %d %d\n", books[i].book_id, books[i].title, books[i].author, books[i].available, books[i].total);
}
fclose(fp);
return;
}
void readBook()
{
FILE* fp = NULL;
if (NULL == (fp = fopen("Book.txt", "r"))) {//没有 Book.txt
return; //fclose(fp);
}
int i = 0;
while (
fscanf(fp, "%d%s%s%d%d\n", &books[i].book_id, books[i].title, books[i].author, &books[i].available, &books[i].total) != EOF
) {
i++;
}
num_books = i;
fclose(fp);
}
int book()
{
readBook();
while (1) {
int choice = bookMenu();
switch (choice) {
case 1:
addBook();
break;
case 2:
borrowBook();
break;
case 3:
returnBook();
break;
case 4:
searchBook();
break;
case 5:
deleteBook();
break;
case 6:
readUser();
writeBook();
writeUser();
printf("修改信息成功！");
break;
case 7:
mainMenu();
break;
case 8:
user();
break;
case 9:
printf("\n\n感谢您的使用！\n\n");
exit(0);
break;
default:
printf("无效数字！\n");
//system("pause");
break;
}
}
return choose();
}
void addUser() {
char name[15];
long long phone;
User* newUser = new User(); // 创建新的会员节点
newUser->next = NULL;
printf("请输入要添加的会员姓名：");
scanf("%s", name);
printf("请输入要添加会员的手机号：");
cin >> phone;
newUser->phone = phone;
strcpy(newUser->name, name);
newUser->bbn = 0;
newUser->booklist = NULL;
newUser->userid = num_users;
if (userslist == NULL)
{
userslist = newUser; // 如果会员链表为空，直接将新会员节点设为头节点
}
else
{
User* current = userslist;
while (current->next != NULL)
{
current = current->next; // 找到会员链表的末尾节点
}
current->next = newUser; // 将新会员节点插入到末尾节点之后
}
printf("会员添加成功！\n");
num_users++;
}
// 查询会员编号、姓名、手机号、已借阅书籍量、具体借阅书籍
void searchUser() {
long long phone;
cout << "请输入要查询会员的手机号：";
cin >> phone;
User* current = userslist;
while (current != NULL)
{
if (current->phone == phone)
{
cout << "会员编号：" << current->userid << endl;
cout << "会员姓名：" << current->name << endl;
cout << "会员手机号：" << current->phone << endl;
cout << "已借阅书籍数量：" << current->bbn << endl;
// 打印会员已借阅的书籍
if (current->bbn == 0)
{
cout << "无借阅记录！" << endl;
return;
}
else
{
bb* bookPtr = current->booklist;
cout << "借阅的书籍：";
while (bookPtr != NULL)
{
cout << bookPtr->bookid << ", ";
bookPtr = bookPtr->next;
}
cout << endl;
return;
}
}
current = current->next;
}
cout << "未找到该手机号对应的会员信息！\n" << endl;
}
//删除会员信息
void deleteUser()
{
long long phone;
int found = 0;
printf("输入要删除会员的手机号: ");
cin >> phone;
User* current = userslist;
User* p = NULL;
// 寻找要删除的会员节点，并记录其前一个节点
while (current != NULL && current->phone != phone)
{
p = current;
current = current->next;
}
// 如果未找到要删除的会员
if (current == NULL)
{
cout << "未找到要删除的会员!" << endl;
return;
}
// 如果要删除的是头节点
if (p == NULL)
{
userslist = current->next;
}
else
{
p->next = current->next;
}
// 释放要删除的节点的内存
delete current;
cout << "会员删除成功!" << endl;
num_users--;
return;
}
void writeUser()
{
FILE* fp = NULL;
fp = fopen("User.txt", "w+");//覆盖写入文件
User* member = new User;
member = userslist;
while (member != NULL)
{
fprintf(fp, "%d %s %lld %d ", member->userid, member->name, member->phone, member->bbn);
bb* p = new bb;
p = member->booklist;
while (p != NULL)
{
fprintf(fp, "%s ", p->bookid);
p = p->next;
}
fprintf(fp, "\n");
member = member->next;
}
fclose(fp);
printf("保存信息成功！\n");
return;
}
void readUser() {
FILE* fp = fopen("User.txt", "r");
User* member = NULL;
User* p = NULL;
bb* book = NULL;
char line[1000];
while (fgets(line, sizeof(line), fp) != NULL)
{
member = new User();
int bytesRead = sscanf(line, "%d %s %lld %d", &member->userid, member->name, &member->phone, &member->bbn);
//if (bytesRead != 4) {
// cout << "文件格式错误" << endl;
// delete member;
// continue;
//}
for (int i = 0; i < member->bbn; ++i)
{
int bookid;
book = new bb();
book->bookid = NULL;
book->next = NULL;
if (member->booklist == NULL)
{
member->booklist = book;
}
else
{
bb* temp = member->booklist;
while (temp->next != NULL)
{
temp = temp->next;
}
temp->next = book;
}
}
if (p != NULL)
{
p->next = member;
num_users++;
}
else
{
userslist = member;
}
p = member;
}
fclose(fp);
cout << "读取信息成功！" << endl;
num_users++;
}
int userMenu()
{
printf("\n**********************************\n");
printf("* 会员管理系统 *\n");
printf("* 1. 增加会员 *\n");
printf("* 2. 查询会员 *\n");
printf("* 3. 删除会员 *\n");
printf("* 4. 保存修改 *\n");
printf("* 5. 返回主系统 *\n");
printf("* 6. 切换图书管理系统 *\n");
printf("* 7. 退出系统 *\n");
printf("**********************************\n");
return choose();
}
int user()
{
readUser();
while (1) {
int choice = userMenu();
switch (choice) {
case 1:
addUser();
break;
case 2:
searchUser();
break;
case 3:
deleteUser();
break;
case 4:
readBook();
writeUser();
writeBook();
break;
case 5:
mainMenu();
break;
case 6:
book();
break;
case 7:
printf("\n\n感谢您的使用！\n\n");
exit(0);
break;
default:
printf("无效数字！\n");
//system("pause");
break;
}
}
return choose();
}
