#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <conio.h>     /*getch()函数使用的头文件*/
#include <windows.h>  /*Sleep()函数使用的头文件*/
#include <string.h>   /*strcmp()函数使用的头文件*/
#include<assert.h>
 
 
 
 
/*图书结构体：图书编号，图书名，图书作者，出版社，库存量*/
typedef struct Book
{
	int iNum;
	char acName[15];
	char acAuthor[15];
	char acPress[15];
	int iAmount;
	struct Book* next;
}Book;
 
/*读者：读者编号，读者姓名，性别，可借书数,读者已借书的编号*/
typedef struct Reader
{
	int iNum;
	char acName[15];
	char acSex[4];
	char position[20];
	int iMax;         //Student 20本 teacher 40本
	int iAmount;
	int aiBookId[100];
	int balance;
	int day;
	struct Reader* next;
}Reader;
 
 
void ShowLibInfo(const Book* book, const Reader* reader);
void ShowLibBook(Book* book);
Book* AddBook(Book* book);
Book* DealoldBook(Book* book);
void foundBook(Book* book);
void foundReader_Info(Reader* reader);
void foundReaderInfo(Reader* reader);
Reader* LendBook(Reader* reader, Book* book);
void returnBook(Reader* reader, Book* book);
void save(Book* book);
Book* read1();
 
//C1
void ShowMainMenu()
{
	system("cls");
	printf("\n\n\n\n\n");
	printf("\t|----------------------欢迎进入---------------------------\n");
	printf("\t|                    读者管理系统                              \n");
	printf("\t|                  1、查询图书馆的总信息                         \n");
	printf("\t|                  2、查询图书馆藏书信息                          \n");
	printf("\t|                  3、存入新书                                  \n");
	printf("\t|                  4、旧书处理                                  \n");
	printf("\t|                  5、根据书名检索书刊信息                        \n");
	printf("\t|                  6、查询读者的借阅信息                         \n");
	printf("\t|                  7、查询读者信息                              \n");
	printf("\t|                  8、读者借书                                 \n");
	printf("\t|                  9、读者还书                                 \n");
	printf("\t|                  10、文件保存                                 \n");
	printf("\t|                  11、从文件读取                                \n");
	printf("\t|                  0、退出                                     \n");
	printf("\t|---------------------------------------------------------\n");
	printf("新打开程序需先添加管理员\n");
	printf("\n");
	printf("\t\t请选择（0-11）：");
}

//C2

//C3

//C4

//C5

//C6

//C7

//C8

//C9

//C10
void returnBook(Reader* reader1, Book* book1)
{
    Reader* reader = reader1;
    Book* book = book1;
    printf("请输入读者的id:");
    int id;
    scanf("%d", &id);
    getchar();
    if (reader != NULL)
    {
        while (reader != NULL)
        {
            if (id == reader->iNum)
            {
                printf("请输入要还的书的编号:");
                int id_book;
                scanf("%d", &id_book);
                getchar();
                for (int i = 0; i < reader->iMax; i++)
                {
                    if (reader->aiBookId[i] == id_book)
                    {
                        reader->aiBookId[i] = 0;
                        while (book)
                        {
                            if (id_book == book->iNum)
                            {
                                book->iAmount++;
                                printf("还书成功!\n");
                                printf("按任意键返回\n");
                                getchar();
                                return reader1;
                            }
                            book = book->next;
                        }
                    }
                }
                printf("没有找到该图书，检查图书的Id\n");
                printf("按任意键返回\n");
                getchar();
                return reader1;
            }
            reader = reader->next;
        }
        printf("没有找到该读者，检查读者id是否输入有误\n");
        printf("按任意键返回\n");
        getchar();
        return reader1;
    }
}

//C11
void save(Book* book1)
{
    FILE* fp;
    Book* pCur = book1;
    int iCount = 0;
    if (pCur == NULL)
    {
        printf("\n没有学生记录!\n");
        return;
    }
    if ((fp = fopen("book.txt", "wb")) == NULL)
    {
        printf("创建文件失败!\n");
        getchar();
        exit(1);
    }
    while (pCur)
    {
        fwrite(pCur, sizeof(Book), 1, fp);
        pCur = pCur->next;
        iCount++;
    }
    printf("\n");
    printf("保存文件的数据数目为:%d\n", iCount);
    fclose(fp);
}
//C12
Book* read1()
{
    FILE* fp;
    Book* pHead = NULL, * pTemp = NULL, * pCur = NULL;
    if ((fp = fopen("book.txt", "r")) == NULL)
    {
        printf("\n文件打开失败!请检查文件名!\n");
        exit(0);
    }
    pTemp = (Book*)malloc(sizeof(Book));
    while (fread(pTemp, sizeof(Book), 1, fp))
    {
        if (!pHead)
        {
            pHead = pCur = pTemp;
        }
        else
        {
            pCur->next = pTemp;
            pCur = pTemp;
        }
        pTemp = (Book*)malloc(sizeof(Book));
    }
    fclose(fp);
    return pHead;
}