// Library_botao.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#define ElemType Book //宏定义
#define LIST_INT_SIZE 1 //改为1，改用ListInsert增加空间
#include
#include
#include
#include "malloc.h"
#include
using namespace std;
void bookFirst(); //先初始化书籍
void bookOut(); //输出
//定义一个结构体，表示书籍的信息
struct Book
{
int bookId;
char bookName[20];
char bookAuthor[20]; //作者
int bookCount;
//char bookLender[20]; //借阅者
};
//每次初始化书籍时，给定一本书固定的bookId号，不会改变 //同一种书用同一个书号
/************************************************************************/
/* 定义线性表，用于对图书号建索引，加快查询速度 */
/************************************************************************/
//定义一个顺序表
struct Sqlist{
ElemType *elem;
int length;
int listsize;
}L={NULL,0,0};
//定义一个枚举类型，让所有的函数返回一个枚举类型的结果
enum status
{
OK,FAILED,EMPTY,NOTINIT,OVERFLOW1,NULLHEAD//OVERFLOW在visual studio无法使用，改为OVERFLOW1
};
void bookFirst()
{
ofstream of("book.dat",ios::out|ios::binary); //定义文件输出流，文件不存在时创建文件
if (!of)
{
cout<<"The file open error!"<>book->bookId;
cout<<"bookName:";
cin>>book->bookName;
cout<<"bookAuthor:";
cin>>book->bookAuthor;
cout<<"bookCount:";
cin>>book->bookCount;
of.write((char*)book,sizeof(Book));
}
of.close();
ofstream of1("book.dat",ios::app|ios::binary);
Book *book1=new Book;
cout<<"bookId:";
cin>>book1->bookId;
cout<<"bookName:";
cin>>book1->bookName;
cout<<"bookAuthor:";
cin>>book1->bookAuthor;
cout<<"bookCount:";
cin>>book1->bookCount;
of1.write((char*)book1,sizeof(Book));
of1.close();
}
void bookOut()
{
ifstream inFile("book.dat",ios::in|ios::binary);
if (! inFile)
{
cout<<"The file open error"<bookId;
cout<<" "<<"bookNname:"<bookName;
cout<<" "<<"bookAuthor:"<bookAuthor;
cout<<" "<<"bookCunt:"<bookCount;
cout<next=NULL;
strcpy((head->book).bookName,""); //初始化头结点
(head->book).bookCount=0;
(head->book).bookId=0;
// cout<<"LinkList已初始化......."<next!=NULL) //让指针指到最后
q=q->next;
//ElemType e; //从文件中读取 for循环
ifstream inFile("book.dat",ios::in|ios::binary);
if (!inFile)
{
cout<<"Open File error!"<next=(Lnode *)malloc(sizeof(Lnode));
strcpy(q->next->book.bookName,b->bookName);
strcpy(q->next->book.bookAuthor,b->bookAuthor);
q->next->book.bookId=b->bookId;
q->next->book.bookCount=b->bookCount;
b=new Book;
q=q->next;
q->next=NULL;
}
inFile.close();
}
return OK;
}
status search(LinkList head,ElemType e) //查询书籍
{
LinkList q;
q=head;
int n=0;
while(NULL!=q->next)
{
if (strcmp(q->next->book.bookName,e.bookName)==0)
{
n++;
cout<<"您要查询的书籍为:"<next->book.bookId<<" "<next->book.bookId<<" "<next->book.bookAuthor<<" "<next->book.bookCount<next;
}
if (n==0)
{
cout<<"不好意思，本馆暂时没有你们要借的书。。。。。。。。。。。。"<next!=NULL)
{
if (strcmp(q->next->book.bookName,e.bookName)==0)
{
n++;
q->next->book.bookCount++;
}
q=q->next;
}
if (n==0) //说明以前图书馆不存在该书
{
q->next=(Lnode *)malloc(sizeof(Lnode));
q->next->book=e;
q->next->book.bookCount=1; //图书馆有了这样的书 1本
}
q->next->next=NULL;
return OK;
}
//借书
status LinkList_Lend(LinkList head, ElemType e)
{
//遍历链表看要借的书是否在管中，若在，返回书籍，不在返回信息
LinkList q;
q=head;
int n=0;
while(q->next!=NULL)
{
if (strcmp(q->next->book.bookName,e.bookName)==0)
{
n++;
if (q->next->book.bookCount>0) //图书馆中还有该书，返回该书信息，修改书籍信息
{
q->next->book.bookCount--;
cout<<"您要借的书："<next->book.bookId<<" "<next->book.bookName<<" "<next->book.bookAuthor<next;
}
if (n==0)
{
cout<<"不好意思，您要的书本馆暂时没有。。。。"<next)
{
if (strcmp(q->next->book.bookName,e.bookName)==0)
{
n++;
q->next->book.bookCount++;
}
q=q->next;
}
if (n==0)
{
cout<<"对不起，您借的书不是本馆的书........"<next)
{
cout<<"单链表中没有元素！"<next;
int i=0;
while(NULL!=p)
{
cout<book.bookId<<" "<book.bookName<<" "<book.bookAuthor<<" "<book.bookCount<next;
}
}
status AddFile(LinkList head) //将修改后的图书馆信息重新写回文件
{
ofstream outf("book.dat",ios::out|ios::binary); //打开文件输出流
LinkList p;
p=head;
if (!outf)
{
cout<<"Open Flie error......"<next)
{
(*b)=p->next->book; //将链表中的Book信息赋给（*b）
outf.write((char *)b,sizeof(Book));
b=new Book;
p=p->next;
}
outf.close();
}
return OK;
}
status select_L(LinkList head) //系统选择函数
{
//InitList_sq(L,5); //线性表完成加载
//ListInput_Sq(L);
cout<<" Welcome to Library"<>n;
cout<>book.bookName;
search(head ,book);
select_L(head);
break;
case 3:
//借书 。。。。。。。。。
cout<<"请输入您要借的书的名字:"<>book.bookName;
LinkList_Lend(head,book);
AddFile(head); //将借书后的书籍信息重新再写到文件中
select_L(head);
break;
case 4:
//还书 。。。。。。。。。。。
cout<<"请输入您想还的书的名字:"<>book.bookName;
LinkList_Return(head,book);
AddFile(head);
select_L(head);
break;
case 5:
//新书采编入库...............
cout<<"输入新书的名字和书号:"<>book.bookId;
cout<<"bookName:"<>book.bookName;
cout<<"bookAuthor:"<>book.bookAuthor;
LinkList_Add(head,book);
AddFile(head);
select_L(head);
break;
case 6:
exit(0);
break;
default:
break;
}
return OK;
}
int main()
{
// bookFirst();
// bookOut();
LinkList head=LinkListInit(); //初始化一个带头结点的链表
ElemType e;
strcpy(e.bookName,"J+++");
strcpy(e.bookAuthor,"boo");
e.bookId=1001;
e.bookCount=1;
LinkList_Creat(head,e);
cout<<"图书馆信息已加载........."<
当前题目：简单图书管理系统
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