大一下c语言课程设计

//
//  main.c
//  高级语言课程设计图书管理系统
//
//  Created by 蔡星旖 on 2022/8/1.
//
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

using namespace std;

//管理员用户：账号：888888， 密码：123456
//读者用户：账号自主设置， 密码：自主设置

//图书信息
struct Book
{
    int num;
    char name[100];
    char author[100];
    char pub[100];
    double price;
    int cnt;
};

struct Stu
{
    int num;
    int password;
    int cnt;
    struct Book book;
};

struct SNode
{
    struct Stu stu;
    struct SNode* next;
};


typedef struct Node
{
    struct Book data;
    struct Node* next;
}Node, *LinkList;

struct Node* list = NULL;
struct SNode* Slist = NULL;


//创建图书表头
struct Node* createHead(void)
{
    //动态内存申请
    struct Node* headNode = (struct Node*)malloc(sizeof(struct Node));
    headNode -> next = NULL;
    return  headNode;
}

//创建用户信息表头
struct SNode* createSHead(void)
{
    //动态内存申请
    struct SNode* headNode = (struct SNode*)malloc(sizeof(struct SNode));
    headNode -> next = NULL;
    return  headNode;
}


//创建节点
struct Node* creatNode(struct Book data)
{
    struct Node* newNode = (struct Node*)malloc(sizeof(struct Node));
    newNode -> data = data;
    newNode -> next = NULL;
    return newNode;
}

//创建读者账户信息
struct SNode* creatReaderNode(struct Stu data)
{
    struct SNode* newNode = (struct SNode*)malloc(sizeof(struct SNode));
    newNode -> stu = data;
    newNode -> next = NULL;
    return newNode;
}

//打印链表
void printList(struct Node* headNode)
{
    struct Node* pMove = headNode -> next;
    printf("图书编号\t\t\t书名\t\t\t作者\t\t\t出版社\t\t\t价格\t\t\t库存\n");
    while(pMove != NULL)
    {
        printf("%d\t\t\t%s\t\t\t%s\t\t\t%s\t\t\t%.1f\t\t\t%d\n", pMove ->data.num, pMove ->data.name, pMove ->data.author, pMove -> data.pub, pMove ->data.price, pMove -> data.cnt);
        pMove = pMove -> next;
    }
}

//插入：头插法插入书籍信息
void insertNodeByHead(struct Node* headNode, struct Book data)
{
    struct Node* newNode = creatNode(data);
    newNode -> next = headNode -> next;
    headNode -> next = newNode;
}

//插入：头插法插入读者账户信息
void insertNodeReader(struct SNode* headNode, struct Stu a)
{
    struct SNode* newNode = creatReaderNode(a);
    newNode -> next = headNode -> next;
    headNode -> next = newNode;
}

//写文件操作
void save(const char* fileName, struct Node* headNode)
{
    FILE * fp = fopen(fileName,"w");
    struct Node* pMove = headNode -> next;
    while(pMove != NULL)
    {
        fprintf(fp, "%d\t%s\t%s\t%s\t%.1lf\t%d\n", pMove -> data.num, pMove -> data.name, pMove ->data.author, pMove -> data.pub, pMove -> data.price, pMove -> data.cnt);
        pMove = pMove -> next;
    }
    fclose(fp);
}

//读图书文件操作
void readFile(const char* fileName, struct Node* headNode)
{
    FILE * fp = fopen(fileName,"r");
    if(fp == NULL)
    {
        //第一次打开程序文件是不存在的
        fp = fopen(fileName, "w+");
    }
    struct Book tmp;
    while(fscanf(fp, "%d\t%s\t%s\t%s\t%lf\t%d\n", &tmp.num, tmp.name, tmp.author, tmp.pub, &tmp.price, &tmp.cnt) != EOF)
    {
        insertNodeByHead(list, tmp);
    }
    fclose(fp);
}

void save2(const char* fileName, struct SNode* headNode)
{
    FILE * fp = fopen(fileName,"w");
    struct SNode* pMove = headNode -> next;
    while(pMove != NULL)
    {
        fprintf(fp,"%d\t%d\t%d\t%d\t%s\t%s\t%s\t%.lf\t%d\n", pMove ->stu.num, pMove ->stu.password, pMove ->stu.cnt, pMove ->stu.book.num, pMove ->stu.book.name, pMove ->stu.book.author, pMove ->stu.book.pub, pMove ->stu.book.price, pMove ->stu.book.cnt);
        pMove = pMove -> next;
    }
    fclose(fp);
}

void readFile2(const char* fileName, struct SNode* headNode)
{
    FILE * fp = fopen(fileName,"r");
    if(fp == NULL)
    {
        //第一次打开程序文件是不存在的
        fp = fopen(fileName, "w+");
    }
    struct Stu tmp;
    while(fscanf(fp, "%d\t%d\t%d\t%d\t%s\t%s\t%s\t%lf\t%d\n",&tmp.num, &tmp.password, &tmp.cnt, &tmp.book.num, tmp.book.name, tmp.book.author, tmp.book.pub, &tmp.book.price, &tmp.book.cnt) != EOF)
    {
        insertNodeReader(Slist, tmp);
    }
    fclose(fp);
}


//检验密码是否正确
int denglu(struct SNode* headNode,int zhanghao, int mima)
{
    struct SNode* pMove = headNode ->next;
    while(pMove != NULL)
    {
        if(pMove ->stu.num == zhanghao)
        {
            if(pMove ->stu.password == mima)
                return 1;
            else
                return 0;
        }
        pMove = pMove -> next;
    }
    if(pMove == NULL)   return 2;
    return 0;
}


//修改密码
int xiugai(struct SNode* headNode,int zhanghao, int mima1, int newmima)
{
    struct SNode* pMove = headNode ->next;
    while(pMove != NULL)
    {
        if(pMove ->stu.num == zhanghao)
        {
            if(pMove ->stu.password == mima1)
            {
                pMove -> stu.password = newmima;
                return 1;
            }
            else
                return 0;
        }
        pMove = pMove -> next;
    }
    if(pMove == NULL)   return 2;
    return 0;
}

//指定书籍编号删除
void deletebynum(struct Node* headNode, int num)
{
    struct Node* LDNode = headNode;
    struct Node* DNode = headNode -> next;
    while(DNode != NULL && DNode -> data.num != num)
    {
        LDNode = DNode;
        DNode = DNode -> next;
    }
    if(DNode == NULL)
        return ;
    else
    {
        LDNode -> next = DNode -> next;
        free(DNode);
        DNode = NULL;
    }
}
//指定作者删除
void deletebyname(struct Node* headNode, char* bookname)
{
    struct Node* LDNode = headNode;
    struct Node* DNode = headNode -> next;
    while(DNode != NULL && strcmp(bookname, DNode ->data.name) )
    {
        LDNode = DNode;
        DNode = DNode -> next;
    }
    if(DNode == NULL)
        return ;
    else
    {
        LDNode -> next = DNode -> next;
        free(DNode);
        DNode = NULL;
    }
}

//按书籍编号进行排序
void BubbleSortBynum(struct Node* headNode)
{
    for(struct Node* p = headNode -> next; p != NULL; p = p -> next)
    {
        for(struct Node* q = headNode -> next; q -> next!= NULL; q = q -> next)
        {
            if (q->data.num > q->next->data.num) {
                struct Book tmp = q->data;
                q->data = q->next->data;
                q->next->data = tmp;
            }
        }
    }
    printList(headNode);
}

//按书籍价格进行排序，交换数据，并不改变节点之间的指针关系

void BubbleSortByprice(struct Node* headNode)
{
    for(struct Node* p = headNode -> next; p != NULL; p = p -> next)
    {
        for(struct Node* q = headNode -> next; q -> next != NULL; q = q -> next)
        {
            if(q -> data.price > q -> next -> data.price)
            {
                struct Book tmp = q->data;
                q->data = q->next->data;
                q->next->data = tmp;
            }
        }
    }
    printList(headNode);
}

//按书籍库存数量进行排序
void BubbleSortBycnt(struct Node* headNode)
{
    for(struct Node* p = headNode -> next; p != NULL; p = p -> next)
    {
        for(struct Node* q = headNode -> next; q -> next != NULL; q = q -> next)
        {
            if(q -> data.cnt > q -> next -> data.cnt)
            {
                struct Book tmp = q->data;
                q->data = q->next->data;
                q->next->data = tmp;
            }
        }
    }
    printList(headNode);
}

//两个链表划分的过程
LinkList Split(LinkList head)
{
    if (head == NULL) {
        return head;
    }

    LinkList prev = NULL;
    LinkList slow = head;
    LinkList fast = head;
  	// 注意这里了要判断fast.next 是否为空
    while (fast && fast -> next) {
        fast = fast -> next -> next;
        prev = slow;
        slow = slow -> next;
    }
    prev -> next = NULL;   // 断开链表，返回后面一段的第一个节点
    return slow;
}

//两个有序链表归并的过程
LinkList merge(LinkList left, LinkList right) {
    LinkList head = new Node;
    LinkList cur = head;
    while (left != NULL && right != NULL) {
        if (left -> data.num > right -> data.num) {
            cur -> next = right;
            right = right -> next;
        } else {
            cur -> next = left;
            left = left -> next;
        }
        cur = cur -> next;
    }

    while (left != NULL) {
        cur -> next = left;
        cur = cur -> next;
        left = left -> next;
    }

    while (right != NULL) {
        cur -> next = right;
        cur = cur -> next;
        right = right -> next;
    }
    return head -> next;
}

//按书籍编号进行归并排序
LinkList sortList(LinkList head) {
    if (head == NULL || head -> next == NULL) {
        // 为空 或 只有一个链表节点均不用排序
        return head;
    }
    LinkList mid = Split(head);
    LinkList left = sortList(head);
    LinkList right = sortList(mid);
    return merge(left, right);
}


//按书名查询书籍
struct Node* SearchByname(struct Node* headNode, char* Bookname )
{
    struct Node* pMove = NULL;
    for(pMove = headNode -> next; pMove != NULL; pMove = pMove -> next)
    {
        if(strcmp(pMove -> data.name, Bookname) == 0)
        {
            break;
        }
    }
    return pMove;
}

//按书籍编号查询书籍
struct Node* SearchBynum(struct Node* headNode, int num )
{
    struct Node* pMove = NULL;
    for( pMove = headNode -> next; pMove != NULL; pMove = pMove -> next)
    {
        if(pMove -> data.num == num)
        {
            break;
        }
    }
    return pMove;
}

//找到借阅的指针
struct SNode* borrow2(struct SNode* headNode,int zhanghao)
{
    struct SNode* pMove = headNode ->next;
    while(pMove != NULL)
    {
        if(pMove ->stu.num == zhanghao)
        {
            return pMove;
        }
    }
    return pMove;
}

//按书名借书
void borrowByname(struct Node* headNode,  struct SNode* headSNode, char* name, int zhanghao)
{
    struct Node* tmp = SearchByname(headNode, name);
    if(tmp != NULL)
    {
        
        struct SNode* reader = borrow2(Slist, zhanghao);
        if(tmp -> data.cnt > 0)
        {
            reader -> stu.book = tmp->data;
            reader -> stu.cnt = 1;
            tmp -> data.cnt --;
            save("bookinfo.txt", list);
            save2("reader.txt", Slist);
            cout << "借书成功" << endl;
        }
        else
        {
            cout << "馆内该图书已全部借出" << endl;
        }
    }
    else
    {
        cout << "图书馆内没有您要借阅的这本图书！" << endl;
    }
}

//按图书编号借书
void borrowBynum(struct Node* headNode,  struct SNode* headSNode, int num, int zhanghao)
{
    struct Node* tmp = SearchBynum(headNode, num);
    if(tmp != NULL)
    {
        struct SNode* reader = borrow2(Slist, zhanghao);
        if(tmp -> data.cnt > 0)
        {
            reader -> stu.book = tmp->data;
            reader -> stu.cnt ++;
            tmp -> data.cnt --;
            save("bookinfo.txt", list);
            save2("reader.txt", Slist);
            cout << "借书成功" << endl;
        }
        else
        {
            cout << "馆内该图书已全部借出" << endl;
        }
    }
    else
    {
        cout << "图书馆内没有您要借阅的这本图书！" << endl;
    }
}

//按书名还书
void sendByname(struct Node* headNode,  struct SNode* headSNode, char* name, int zhanghao)
{
    struct Node* tmp = SearchByname(headNode, name);
    if(tmp != NULL)
    {
        struct SNode* reader = borrow2(Slist, zhanghao);
        reader -> stu.cnt = 0;
        reader -> stu.book ={0, "/0", "/0", "/0", 0, 0};
        tmp->data.cnt ++;
        cout << "还书成功" << endl;
        save("bookinfo.txt", list);
        save2("reader.txt", Slist);
    }
    else
    {
        cout << "此书不是本图书馆藏书！" << endl;
    }
}

//按图书编号还书
//按书名还书
void sendBynum(struct Node* headNode,  struct SNode* headSNode, int num, int zhanghao)
{
    struct Node* tmp = SearchBynum(headNode, num);
    if(tmp != NULL)
    {
        struct SNode* reader = borrow2(Slist, zhanghao);
        reader -> stu.cnt = 0;
        reader -> stu.book ={0, "/0", "/0", "/0", 0, 0};
        tmp->data.cnt ++;
        cout << "还书成功" << endl;
        save("bookinfo.txt", list);
        save2("reader.txt", Slist);
    }
    else
    {
        cout << "此书不是本图书馆藏书！" << endl;
    }
}

//图书馆界面、菜单
void allmenu(void)
{
    printf("-------------------------\n");
    printf("欢迎来到图书管理系统\n");
    printf("\t0.退出系统\n");
    printf("\t1.登记书籍\n");
    printf("\t2.浏览书籍\n");
    printf("\t3.查询书籍\n");
    printf("\t4.书籍排序\n");
    printf("\t5.删除书籍\n");
    printf("-------------------------\n");
    printf("请输入0～7选择您需要的业务\n");
}


//菜单按键
void allkeydown(void) {
    int k = 0;
    //临时变量存储书籍信息
    struct Book tmpBook;
    scanf("%d", &k);
    if (k == 0)
    {
        printf("\t退出\n");
        printf("\t退出成功\n");
        system("pause");
        exit(0);
    }
    else if (k == 1)
    {
        printf("\t登记\n");
        printf("请输入书籍的信息：编号 书名 作者 出版社 价格 数量:\n");
        scanf("%d%s%s%s%lf%d", &tmpBook.num, tmpBook.name, tmpBook.author, tmpBook.pub, &tmpBook.price, &tmpBook.cnt);
        insertNodeByHead(list, tmpBook);
        save("bookinfo.txt", list);
        cout << "添加成功" << endl;
    }
    else if (k == 2)
    {
        printf("\t浏览\n");
        printList(list);
    }
    else if (k == 3)
    {
        printf("\t查询\n");
        printf("请输入您要选择的查询方式：\n");
        printf("1.按书名查找\n");
        printf("2.按书籍编号查找\n");
        int k2;
        scanf("%d", &k2);
        if (k2 == 1)
        {
            printf("请输入您要查找的书名：\n");
            scanf("%s", tmpBook.name);
            struct Node *p = SearchByname(list, tmpBook.name);
            if (p != NULL)
            {
                printf("您要查找的书籍已找到！\n");
                printf("您要查找的书籍信息如下：\n");
                printf("%d\t%s\t%s\t%s\t%.1lf\t%d\n", p->data.num, p->data.name, p->data.author, p->data.pub,
                       p->data.price, p->data.cnt);
            }
            else
            {
                printf("很抱歉， 您要查找的书籍未找到\n");
            }
        }
        else if (k2 == 2)
        {
            printf("请输入您要查询书籍的编号：\n");
            scanf("%d", &tmpBook.num);
            struct Node *p = SearchBynum(list, tmpBook.num);
            if (p != NULL)
            {
                printf("您要查找的书籍已找到！\n");
                printf("您要查找的书籍信息如下：\n");
                printf("%d\t%s\t%s\t%s\t%.1lf\t%d\n", p->data.num, p->data.name, p->data.author, p->data.pub,
                       p->data.price, p->data.cnt);
            }
            else
            {
                printf("很抱歉， 您要查找的书籍未找到\n");
            }
        }
        else
        {
            printf("您的输入有误， 查找失败！\n");
        }
    }
    else if(k == 4)
    {
        printf("\t排序\n");
        printf("请选择您要排序的方式：\n");
        printf("1.按书籍的序号进行排序\n");
        printf("2.按书籍的价格进行排序\n");
        printf("3.按书籍的库存数量进行排序\n");
        int m = 0;
        scanf("%d", &m);
        if (m == 1)
        {
            BubbleSortBynum(list);
        }
        else if (m == 2)
        {
            BubbleSortByprice(list);
        }
        else if (m == 3)
        {
            BubbleSortBycnt(list);
        }
        else
        {
            printf("输入错误\n");
        }
    }
    else if(k == 5)
    {
        printf("\t删除\n");
        printf("请选择删除书籍的方式：\n");
        printf("1.按书籍的编号删除\n");
        printf("2.按书名删除\n");
        int k1;
        scanf("%d", &k);
        if (k == 1)
        {
            printf("请输入您要删除书籍的编号：\n");
            int num1 = 0;
            scanf("%d", &num1);
            deletebynum(list, num1);
            save("bookinfo.txt", list);
        }
        else if (k == 2)
        {
            printf("请输入您要删除书籍的书名：\n");
            char ch[100];
            scanf("%s", ch);
            deletebyname(list, ch);
            save("bookinfo.txt", list);
            printf("删除成功！\n");
        }
        else
        {
            printf("您的输入有误， 删除失败！\n");
        }
    }
    else
    {
            printf("\t输入错误\n");
    }
}

void secondmenu(void)
{
    printf("-------------------------\n");
    printf("欢迎来到图书管理系统\n");
    printf("0.退出系统\n");
    printf("1.浏览图书\n");
    printf("2.查找图书\n");
    printf("3.借阅图书\n");
    printf("4.归还图书\n");
    printf("-------------------------\n");
}

void secondkey(int zhanghao) {
    int k = 0;
    cin >> k;
    struct Book tmpBook;
    if (k == 0)
    {
        printf("\t退出\n");
        printf("\t退出成功\n");
        system("pause");
        exit(0);
    }
    else if (k == 1)
    {
        printf("\t浏览\n");
        printList(list);
    }
    else if (k == 2)
    {
        printf("\t查询\n");
        printf("请输入您要选择的查询方式：\n");
        printf("1.按书名查找\n");
        printf("2.按书籍编号查找\n");
        int k2;
        scanf("%d", &k2);
        if (k2 == 1)
        {
            printf("请输入您要查找的书名：\n");
            scanf("%s", tmpBook.name);
            struct Node *p = SearchByname(list, tmpBook.name);
            if (p != NULL)
            {
                printf("您要查找的书籍已找到！\n");
                printf("您要查找的书籍信息如下：\n");
                printf("%d\t%s\t%s\t%s\t%.1lf\t%d\n", p->data.num, p->data.name, p->data.author, p->data.pub,
                       p->data.price, p->data.cnt);
            }
            else
            {
                printf("很抱歉， 您要查找的书籍未找到\n");
            }
        }
        else if (k2 == 2)
        {
            printf("请输入您要查询书籍的编号：\n");
            scanf("%d", &tmpBook.num);
            struct Node *p = SearchBynum(list, tmpBook.num);
            if (p != NULL)
            {
                printf("您要查找的书籍已找到！\n");
                printf("您要查找的书籍信息如下：\n");
                printf("%d\t%s\t%s\t%s\t%.1lf\t%d\n", p->data.num, p->data.name, p->data.author, p->data.pub,
                       p->data.price, p->data.cnt);
            }
            else
            {
                printf("很抱歉， 您要查找的书籍未找到\n");
            }
        }
    }
    else if (k == 3)
    {
            printf("\t借阅\n");
            cout << "请选择您要借阅的方式！" << endl;
            cout << "1.按书名借阅" << endl;
            cout << "2.按图书编号借阅" << endl;
            int key = 0;
            cin >> key;
            if (key == 1)
            {
                cout << "请输入您要借阅的书名" << endl;
                char tmpbook[100];
                cin >> tmpbook;
                borrowByname(list, Slist, tmpbook, zhanghao);
            }
            else if (key == 2)
            {
                cout << "请输入您要借阅图书的编号" << endl;
                int num;
                cin >> num;
                borrowBynum(list, Slist, num, zhanghao);
            }
        }
    else if (k == 4)
    {
            printf("\t归还\n");
            cout << "请您选择归还的方式" << endl;
            cout << "1.按书名归还 " << endl;
            cout << "2.按图书编号归还" << endl;
            int key = 0;
            cin >> key;
            if (key == 1)
            {
                cout << "请输入您要归还的书名" << endl;
                char tmpbook[100];
                cin >> tmpbook;
                sendByname(list, Slist, tmpbook, zhanghao);
            } else if (key == 2)
            {
                cout << "请输入您要归还图书的编号" << endl;
                int num;
                cin >> num;
                sendBynum(list, Slist, num, zhanghao);
            }
        }
    else
    {
            printf("您的输入有误， 查找失败！\n");
    }
}


void mainmenu(void)
{
    printf("-------------------------\n");
    printf("欢迎来到图书管理系统\n");
    printf("请登陆您的账户\n");
    printf("如果您是新用户请选择注册您的账号\n");
    printf("0.注册账号\n");
    printf("1.登陆管理员账号\n");
    printf("2.登陆读者账号\n");
    printf("3.修改密码\n");
    printf("-------------------------\n");
}

void mainkey()
{
    int k = 0;
    cin >> k;
    if(k == 0)
    {
        cout << "请输入您要注册的账号和密码， 要求都是整数" << endl;
        int zhanghao, mima;
        cin >> zhanghao >> mima;
        struct Stu tmp;
        tmp = {zhanghao, mima, 0, 0, "/0", "/0", "/0", 0.0, 0};
        insertNodeReader(Slist,tmp);
        save2("reader.txt", Slist);
        cout << "注册成功！请您登陆" << endl;
    }
    else if(k == 2)
    {
        cout << "请输入您的账号和密码" << endl;
        int zhanghao, mima;
        cin >> zhanghao >> mima;
        int res = denglu(Slist,zhanghao, mima);
        if(res == 1)
        {
            cout << "登陆成功" << endl;
            while(1)
            {
                secondmenu();
                secondkey(zhanghao);
                system("pause");
                system("cls");
            }

        }
        else if(res == 0)
        {
            cout << "您输入的密码错误" << endl;
        }
        else if(res == 2)
        {
            cout << "您输入的账户错误或您还未注册账户" << endl;
        }
    }
    else if(k == 1)
    {
        cout << "请输入管理员账号和密码：" << endl;
        int num, password;
        cin >> num >> password;
        if(num == 888888 && password == 123456)
        {
            cout << "登陆成功" << endl;
            while(1)
            {
                allmenu();
                allkeydown();
                system("pause");
                system("cls");
            }
        }
        else
        {
            cout << "登陆错误" << endl;
        }
    }
    else if(k == 3)
    {
        cout << "请输入您原来的账号，密码，以及您要修改的新密码，以便验证您的身份" << endl;
        int zhanghao, mima, newmima;
        cin >> zhanghao >> mima >> newmima;
        int res = xiugai(Slist, zhanghao, mima, newmima);
        if(res == 1)
        {
            cout << "修改成功！" << endl;
            save2("reader.txt", Slist);
        }
        else
        {
            cout << "您输入的账号或密码有误请您检查后重试！" << endl;
        }
    }
}

int main(int argc, const char * argv[])
{
    list = createHead();
    Slist = createSHead();
    readFile("bookinfo.txt", list);
    readFile2("reader.txt", Slist);
    while(1)
    {
        mainmenu();
        mainkey();
        system("pause");
        system("cls");
    }
    return 0;
}