//Author: Zijin JDD
//Time: January 2022
#include <>
#include <fstream>
#include<iomanip>
#include <iostream>
#include<>
using namespace std;
class Reader //Category that stores reader information
{
public:
char ReaderName[50]; //Reader's name
char Password[50]; //password
char book1[30], book2[30]; //Each person borrows up to two books, you can increase or decrease the limit as needed, and the book stores the ISBN number
int y_n; //Record the number of books borrowed, 0 is not borrowed, 1 is borrowed one, 2 is borrowed two books to borrow two
Reader *next; //Pointer to the next node
};
/***Reader List****/
class ReaderList { //Indicate how many nodes in the linked list
public:
static Reader * point, *head_point; //Define two Rreader pointers, head_point is the head pointer, point is the active pointer
static int o;
ReaderList() //Constructor, initialize pointer
{
head_point = new Reader[sizeof(Reader)];
point = new Reader[sizeof(Reader)];
strcpy(head_point->ReaderName,"0");
head_point->next = NULL;
point->next = NULL;
o = 0;//Number of readers
}
static void save_readerfile() //Storage the file, it exists in the linked list
{
string r1,r2,r3,r4;
fstream file;
Reader *p;
p= new Reader[sizeof(Reader)];
file.open("library//",ios::in | ios::out);
if(!file)
{
cout<<" not open file"<<endl;
}
getline(file,r1,',');
strcpy(p->ReaderName,&r1[0]);
strcpy(head_point->ReaderName,&r1[0]);
getline(file,r2,',');
strcpy(p->Password,&r2[0]);
strcpy(head_point->Password,&r2[0]);
getline(file,r3,',');
strcpy(p->book1,&r3[0]);
strcpy(head_point->book1,&r3[0]);
getline(file,r4,'\n');
strcpy(p->book2,&r4[0]);
strcpy(head_point->book2,&r4[0]);
point =head_point;
while(!file.eof())
{
p= new Reader[sizeof(Reader)];
getline(file,r1,',');
if(r1=="")//Enhance the robustness. If the file is wrapped, the last behavior is empty. If it is not added, the last node will be incorrect.
{
break;
}
strcpy(p->ReaderName,&r1[0]);
getline(file,r2,',');
strcpy(p->Password,&r2[0]);
getline(file,r3,',');
strcpy(p->book1,&r3[0]);
getline(file,r4,'\n');
strcpy(p->book2,&r4[0]);
p->next=NULL;
point->next = p;
point = p;
o++;
}
file.close();
delete p;
}
static void load_readerfile() //Upload file
{
Reader *q;
q = head_point;
fstream file;
file.open("library//",ios::in | ios::out|ios::trunc);
if(!file)
{
cout<<" not open file"<<endl;
}
while(q!=NULL)
{
file<<q->ReaderName<<","<<q->Password<<","<<q->book1<<","<<q->book2<<endl;
q = q->next ;
}
file.close();
}
static Reader* reader_register() //Reader registration
{
string n1,n2;
Reader *nw;
nw = new Reader[sizeof(Reader)];
cout<<"Name (can't exceed 50 characters):"<<endl;
cin >>setw(50)>>n1;
//Set the name length cannot exceed 50
cout<<"password:"<<endl;
cout<<"Password (can't exceed 50 characters):"<<endl;
//Set the password length cannot exceed 50
cin >> n2;
strcpy(nw->ReaderName,&n1[0]);
strcpy(nw->Password,&n2[0]);
strcpy(nw->book1," ");
strcpy(nw->book2," ");
nw->next = NULL;
return nw;
}
static void Add_Point(Reader * p) //Add new node to link table
{
save_readerfile();
if(head_point==NULL)
{
head_point=p;
}
else
{
point=head_point;
while(point->next!=NULL)
{
point=point->next;
}
point->next=p;
}
Reader *q;
string r1,p1,b1,b2;
q = head_point;
fstream file;
file.open("library//",ios::in | ios::out);
if(!file)
{
cout<<" not open file"<<endl;
}
while(q!=NULL)
{
file<<q->ReaderName<<","<<q->Password<<","<<q->book1<<","<<q->book2<<endl;
// cout<<q->ReaderName<<","<<q->Password<<","<<q->book1<<","<<q->book2<<endl;
q = q->next ;
}
file.close();
}
static Reader* reader_land() //Reader login
{
string readername,readerpass;
cout<<"Please enter your name:"<<endl;
cin >> readername;
point=head_point->next;
while(point!=NULL)
{
if(strcmp(point->ReaderName,&readername[0])==0)//Find users
{
cout<<"Please enter your password:";
cin>> readerpass;
if(strcmp(point->Password,&readerpass[0])==0)// Verify password
{
cout<<"Login successfully!"<<endl;
return point;//Return to user pointer
}
else
{
cout<<"Error password!"<<endl;
return NULL;//Return empty
}
}
point=point->next;//Next
}
if(point==NULL)
{
cout<<"This user does not exist! You can register first and try ^_^"<<endl;
}
return NULL;
}
static void show_OneReader(Reader *p) //Show a reader's information
{
if(p==NULL)
{
return;
}
cout << "***********************************************" << endl;
cout <<"Name"<<"\t"<<p->ReaderName <<endl;
cout <<"The ISBN number of the first book:"<<"\t"<<p->book1 <<endl;
cout <<"The ISBN number of the second book:"<<"\t"<<p->book2 <<endl;
}
static void show_all()
{
Reader *q;
q = head_point;
while(q!=NULL)
{
cout<<q->ReaderName<<","<<q->Password<<","<<q->book1<<","<<q->book2<<endl;
q = q->next ;
}
}
static void change_password(Reader *p) //Modify password
{
if(p==NULL)
{
return;
}
Reader *point;
point = head_point;
while(strcmp(point->ReaderName ,p->ReaderName)!=0)
{
point=point->next;//Locate the logged-in user in the linked list
}
string n2;
cout<<"Please enter a new password:"<<endl;
cin>>n2;
strcpy(point->Password,&n2[0]);
load_readerfile();
cout<<"The change was successful!"<<endl;
}
static void delete_reader(Reader *p) //Reader logout
{
if(p==NULL)
{
return;
}
Reader *q;//Assist the point pointer, in p->next=point
point = head_point;
q = point;
point = point->next;
while((strcmp(point->ReaderName ,p->ReaderName)!=0)&&point!=NULL)
{
q=point;
point=point->next;
}
q->next=point->next;
delete point;
load_readerfile();
cout<<"Log off successfully!"<<endl;
o=o-1;//Reduce the number of readers by one
}
static void delete_readers() //Clear all reader information
{
cout<<"Are you sure you delete them all? Please delete them with caution. Please press 1 if you are sure, otherwise press the other keys."<<endl;
char h;
cin>>h;
if(h=='1')
{
Reader *p,*q;
p = head_point->next;
while(p!=NULL)
{
q=p;
p=p->next ;
free(q);
}
head_point->next=NULL;
load_readerfile();
cout<<"All readers' information has been successfully cleared!"<<endl;
}
else
{
return;
}
}
static void help()
{
cout<<"No help for the time being, BALABALABALA"<<endl;
}
static void GoInto_ReaderInfo() //Reader Information Menu
{
char i;
save_readerfile();
do
{
cout << "***********************************************" << endl;
cout << "* Reader Function*" << endl;
cout << "* *" << endl;
cout << "* 1. Log in to view *" << endl;
cout << "* *" << endl;
cout << "* 2. Register *" << endl;
cout << "* *" << endl;
cout << "* 3. Log out *" << endl;
cout << "* *" << endl;
cout << "* 4. Modify password *" << endl;
cout << "* *" << endl;
cout << "* 5. View all readers' information# *" << endl;
cout << "* *" << endl;
cout << "* 6. Clear all reader information# *" << endl;
cout << "* *" << endl;
cout << "* 7. Help Notes *" << endl;
cout << "* *" << endl;
cout << "* 0. Return to the previous level *" << endl;
cout << "* *" << endl;
cout << "***********************************************" << endl;
cout<<"# number is the administrator function, you need to log in to the administrator account <(ˉ^ˉ)> "<<endl;
cout <<"Please enter the corresponding function code:"<<endl;
cin >> i;
Reader *p;
switch (i)
{
case '1'://Login to view
p = reader_land();
show_OneReader(p);
break;
case '2'://register
p = reader_register();
Add_Point(p);
cout<<"Registered successfully"<<endl;
break;
case '3'://Login
cout<<"Login first to log in to the account you want to cancel to confirm that it is me"<<endl;
p = reader_land();
delete_reader(p);
break;
case '4'://Modify password
cout<<"Login first to change your password to confirm that it is me"<<endl;
p = reader_land();
change_password(p);
break;
case '5':
cout<<"Please log in to the administrator's account first and then perform the operation"<<endl;
p = reader_land();
if((p==NULL)||strcmp(p->ReaderName,"guanliyuan")!=0)//Set the administrator as guanliyuan
{
cout<<"You are not an administrator and cannot do this"<<endl;
break;
}
show_all();
break;
case '6':
cout<<"Please log in to the administrator's account first and then perform the operation"<<endl;
p = reader_land();
if((p==NULL)||strcmp(p->ReaderName,"guanliyuan")!=0)//Set the administrator as guanliyuan
{
cout<<"You are not an administrator and cannot do this"<<endl;
break;
}
delete_readers();
break;
case '7':
help();
break;
case '0':
break;
default:cout << "Input error, please re-enter." << endl;
}
}while(i!='0');
}
};
Reader* ReaderList::head_point=new Reader[sizeof(Reader)];//Reader head node
Reader* ReaderList::point=new Reader[sizeof(Reader)];//Temporary Reader Node
int ReaderList::o=1 ;
class Book //Category that stores book information
{
public:
char *BookName; // Book title, used to search
char *Writer; //Author name, used to search
char PublishDate[20]; // Publication date, used for search
char ISBN[30]; //ISBN number, used to search
char ebook[2]; //E-book
char paperbook[2]; //Paper book
char *Publisher; // Publisher, used to find
char *BriefIntroduction; //Introduction to the book
int i_o; //Judge whether the book is lent, 0 is on the shelf, 1 is lent
Book *next; //Pointer to the next node
};
/***Book Library List****/
class BookList {
public:
static Book * node;
static Book *head_ptr ;//Define two Book pointers, head_ptr is the head pointer, and node\p is the active pointer
static int n;
BookList()
{ //Constructor, initialize pointer
node = new Book[sizeof(Book)]; //Information for storing books
head_ptr = new Book[sizeof(Book)];
head_ptr->next = NULL;
node->next = NULL;
}
static void save_file() //Storage files
{
Book *p; //Temporary node
fstream file;
string s1,s2,s3,s4,s5,s6,s7,s8,s9;
char a1[1000];
file.open("library//",ios::in | ios::out);
if(!file)
{
cout<<"[save_file] not open file"<<endl;
return;
}
getline(file,s1,',');
head_ptr->BookName=new char[strlen(s1.c_str())+1];
strcpy(head_ptr->BookName,s1.c_str());
getline(file,s2,',');
head_ptr->Writer=new char[strlen(s2.c_str())+1];
strcpy(head_ptr->Writer,s2.c_str());
getline(file,s3,',');
strcpy(head_ptr->PublishDate,&s3[0]);
getline(file,s4,',');
strcpy(head_ptr->ISBN,&s4[0]);
getline(file,s5,',');
strcpy(head_ptr->ebook,&s5[0]);
getline(file,s6,',');
strcpy(head_ptr->paperbook,&s6[0]);
getline(file,s7,',');
head_ptr->Publisher=new char[strlen(s7.c_str())+1];
strcpy(head_ptr->Publisher,s7.c_str());
getline(file,s8);
head_ptr->BriefIntroduction=new char[strlen(s8.c_str())+1];
strcpy(head_ptr->BriefIntroduction,s8.c_str());
node = head_ptr;
while(!file.eof())
{
p = new Book[sizeof(Book)];
getline(file,s1,',');
if(s1=="")//Enhance the robustness. If the file is wrapped, the last behavior is empty. If it is not added, the last node will be incorrect.
{
break;
}
p->BookName=new char[strlen(s1.c_str())+1];
strcpy(p->BookName,s1.c_str());
getline(file,s2,',');
p->Writer=new char[strlen(s2.c_str())+1];
strcpy(p->Writer,&s2[0]);
getline(file,s3,',');
strcpy(p->PublishDate,&s3[0]);
getline(file,s4,',');
strcpy(p->ISBN,&s4[0]);
getline(file,s5,',');
strcpy(p->ebook,&s5[0]);
getline(file,s6,',');
strcpy(p->paperbook,&s6[0]);
getline(file,s7,',');
p->Publisher=new char[strlen(s7.c_str())+1];
strcpy(p->Publisher,&s7[0]);
getline(file,s8,'\n');
p->BriefIntroduction=new char[strlen(s8.c_str())+1];
strcpy(p->BriefIntroduction,&s8[0]);
p->next=NULL;
node -> next= p;
node = p;
// j++;
n++;//The number of books
// cout<<"Number of books: "<<n<<endl;
}
file.close();
delete p;
}
static void load_file() //Upload file
{
Book *q;
q = head_ptr;
fstream file;
file.open("library//",ios::in | ios::out|ios::trunc);
if(!file)
{
cout<<"[load_file] not open file"<<endl;
}
while(q!=NULL)
{
file<<q->BookName<<","<<q->Writer<<","<<q->PublishDate<<","<<q->ISBN<<","<<q->ebook<<","<<q->paperbook<<","<<q->Publisher<<","<<q->BriefIntroduction<<endl;
q = q->next ;
}
file.close();
}
static Book* AddNewBook() //Register new book, assign values to class objects pointed to by node
{
string n1,n2,n3,n4,n5,n6,n7,n8;
Book *nw;
nw = new Book[sizeof(Book)];
cout<<"Please enter the following information for the new book:"<<endl;
cout<<"Title of the Book:"<<endl;
cin>>n1;
cout<<"Author's name:"<<endl;
cin>>n2;
cout<<"Published Date:"<<endl;
cin>>n3;
cout<<"ISBN number:"<<endl;
cin>>n4;
cout<<"E-books (0 for shelf, 1 for loan):"<<endl;
cin>>n5;
cout<<"Paper book (0 is on shelf, 1 is loaned):"<<endl;
cin>>n6;
cout<<"Publisher:"<<endl;
cin>>n7;
cout<<"Content Introduction:"<<endl;
cin>>n8;
nw->BookName=new char[strlen(n1.c_str())+1];
nw->Writer=new char[strlen(n2.c_str())+1];
nw->Publisher=new char[strlen(n7.c_str())+1];
nw->BriefIntroduction=new char[strlen(n8.c_str())+1];
strcpy(nw->BookName,n1.c_str());
strcpy(nw->Writer,&n2[0]);
strcpy(nw->PublishDate,&n3[0]);
strcpy(nw->ISBN,&n4[0]);
strcpy(nw->ebook,&n5[0]);
strcpy(nw->paperbook,&n6[0]);
strcpy(nw->Publisher,&n7[0]);
strcpy(nw->BriefIntroduction,&n8[0]);
nw->next = NULL;
n=n+1;
return nw;
}
static void Add_list(Book * p) //Add nodes to Book linked list, used when adding new books
{
node = head_ptr;
while(node->next!=NULL)//Find the tail node
{
node=node->next;
}
node->next = p;//Connect a new node from the tail
node = p;
p->next=NULL;//Empty at the end
load_file();//Update the file
}
static void borrow_book(Reader *p) //Borrowing procedures
{
Book *n;
if (strcmp(p->book1," ")!=0 &&strcmp(p->book2 ," ")!=0) //Borrow books
{
cout<<"You have borrowed 2 books and can't borrow books anymore. You can return them first and then borrow them."<<endl;
}
else if(strcmp(p->book1," ")==0)
{
//Looking for a book
n = search_ISBN();
//Borrow e-books at will, and only two paper books can be borrowed
cout<<"Only record paper-based borrowing records, electronic paper-based books do not occupy the quota for borrowing books. Please download and view it yourself!"<<endl;
if(strcmp(n->paperbook,"0")==0)
{
cout<<"《"<<n->BookName<<"》Paper books can be borrowed"<<endl;
cout<<"Confirm Borrowing"<<n->BookName<<"》Are you a paper book? (Please press 1 if you confirm, otherwise press any other key)"<<endl;
char temp;
cin>>temp;
if(temp=='1')
{
strcpy(p->book1,n->ISBN);//Record the ISBN number of the borrowed book
strcpy(n->paperbook,"1");//Lend the book, 0->1, which means it is no longer available
ReaderList::load_readerfile();//Update user information
BookList::load_file();//Update library information
cout<<"Borrowing the book successfully!!"<<endl;
}
}
else
{
cout<<"none""<<n->BookName<<"》"<<endl;
}//If you want to borrow 20 books, you can string books into a linked list, which is a bit troublesome
}
else if(strcmp(p->book2," ")==0)
{
//Looking for a book
n = search_ISBN();
//Borrow e-books at will, and only two paper books can be borrowed
cout<<"Only record paper-based borrowing records, electronic paper-based books do not occupy the quota for borrowing books. Please download and view it yourself!"<<endl;
if(strcmp(n->paperbook,"0")==0)
{
cout<<"《"<<n->BookName<<"》Paper books can be borrowed"<<endl;
cout<<"Confirm Borrowing"<<n->BookName<<"》Are you a paper book? (Please press 1 if you confirm, otherwise press any other key)"<<endl;
char temp;
cin>>temp;
if(temp=='1')
{
strcpy(p->book2,n->ISBN);//Record the ISBN number of the borrowed book
strcpy(n->paperbook,"1");//Lend the book, 0->1, which means it is no longer available
ReaderList::load_readerfile();//Update user information
BookList::load_file();//Update library information
cout<<"Borrowing the book successfully!!"<<endl;
}
}
else
{
cout<<"none""<<n->BookName<<"》"<<endl;
}
}
else
{
cout<<"Borrowing a book failed"<<endl;
}
}
static void return_book(Reader *p) //Return the book procedures
{
cout << "***********************************************" << endl;
cout <<"Name"<<"\t"<<p->ReaderName <<endl;
cout <<"book1"<<"\t"<<p->book1 <<endl;
cout <<"book2"<<"\t"<<p->book2 <<endl;
cout<<"Return to book1 (press 1), return to book2 (press 2),"<<endl;
char hua;
cin>>hua;
Book *u;
if(hua=='1'&&p->book1!=" ")
{
u=BookList::head_ptr;
while(u!=NULL)
{
if(strcmp(u->ISBN,p->book1)==0)
{
strcpy(u->paperbook,"0");//On the rack is 0
strcpy(p->book1 ," ");//It will be empty after returning the book
ReaderList::load_readerfile();//Update user information
BookList::load_file();//Update library information
cout<<"Successfully returned the book"<<endl;
break;
}u=u->next ;
}
if(u==NULL)
{
cout<<"No this book! The return failed, please check the ISBN number"<<endl;
}
}
else if(hua=='2'&&p->book2!=" ")
{
u=BookList::head_ptr;
while(u!=NULL)
{
if(strcmp(u->ISBN ,p->book2)==0)
{
strcpy(u->paperbook,"0");//On the rack is 0
strcpy(p->book2 ," ");//It will be empty after returning the book
ReaderList::load_readerfile();//Update user information
BookList::load_file();//Update library information
cout<<"Successfully returned the book"<<endl;
break;
}u=u->next ;
}
if(u==NULL)
{
cout<<"No this book! The return failed, please check the ISBN number"<<endl;
}
}
else
{
cout<<"Input error!"<<endl;
}
}
static void show_book(Book *p)
{
cout << "***********************************************" << endl;
cout<<"Book Name"<<"\t"<<p->BookName<<endl;
cout<<"author"<<"\t"<<p->Writer<<endl;
cout<<"Publishing Date"<<"\t"<<p ->PublishDate<<endl;
cout<<"ISBN"<<"\t"<<p->ISBN<<endl;
if(strcmp(p->ebook ,"0")==0)
{
cout<<"E-book"<<"\t"<<"In-Steps"<<endl;
}
if(strcmp(p->paperbook,"0")==0)
{
cout<<"Paper Book"<<"\t"<<"In-Steps"<<endl;
}
cout<<"Publisher"<<"\t"<<p->Publisher<<endl;
cout<<"Book Introduction"<<"\t"<<p->BriefIntroduction<<endl;
cout << "***********************************************" << endl;
}
static Book* search_ISBN() //Press ISBN number to find books
{
string cs;
cout<<"Please enter the ISBN number of the book:"<<endl;
cin>>cs;
Book *p;
p=head_ptr;
while(p!=NULL)
{
if(strcmp(p->ISBN ,&cs[0])==0)
{
show_book(p);
break;
}
p=p->next;
}
if(p==NULL)
{
cout<<"This book was not found, try looking for other books"<<endl;
}
return p;
}
static void search_BookName() //Find books by title
{
string cs;
cout<<"Please enter the title of the book:"<<endl;
cin>>cs;
Book *p;
int i=0;
p=head_ptr;
while(p!=NULL)
{
if(strcmp(p->BookName,&cs[0])==0)
{
show_book(p);
i++;
}
p=p->next;
}
cout<<"Finished"<<i<<"The real name is "<<cs<<"""<<endl;
}
static void search_Writer() //Find books by author name
{
string cs;
cout<<"Please enter the author name of the book:"<<endl;
cin>>cs;
Book *p;
int i=0;
p=head_ptr;
while(p!=NULL)
{
if(strcmp(p->Writer,&cs[0])==0)
{
show_book(p);
i++;
}
p=p->next;
}
cout<<"Finished"<<i<<"Book"<<cs<<"The Book"<<endl;
}
static void search_Publisher() //Click books by publisher
{
string cs;
cout<<"Please enter the publisher of the book:"<<endl;
cin>>cs;
Book *p;
int i=0;
p=head_ptr;
while(p!=NULL)
{
if(strcmp(p->Publisher,&cs[0])==0)
{
show_book(p);
i++;
}
p=p->next;
}
cout<<"Finished"<<i<<"Book"<<cs<<"The Book"<<endl;
}
static void search_PublishDate() //Find books by publication date
{
string cs;
cout<<"Please enter the publication date of the book:"<<endl;
cin>>cs;
int i=0;
Book *p;
p=head_ptr;
while(p!=NULL)
{
if(strcmp(p->PublishDate,&cs[0])==0)
{
show_book(p);
i++;
}
p=p->next;
}
cout<<"Finished"<<i<<"Book"<<cs<<"The Book"<<endl;
}
static void search() //Enter the search menu
{
char r;
do
{
cout << "***********************************************" << endl;
cout << "* Book Search *" << endl;
cout << "* *" << endl;
cout << "* 1. Press ISBN number to find books *" << endl;
cout << "* *" << endl;
cout << "* 2. Find books by title *" << endl;
cout << "* *" << endl;
cout << "* 3. Find books by author's name *" << endl;
cout << "* *" << endl;
cout << "* 4. Search for books by publisher *" << endl;
cout << "* *" << endl;
cout << "* 5. Find books by publication date *" << endl;
cout << "* *" << endl;
cout << "* 0. Return to the previous level *" << endl;
cout << "* *" << endl;
cout << "***********************************************" << endl;
cout <<"Please enter the corresponding function code:"<<endl;
cin>>r;
switch(r)
{
case '1':
search_ISBN();
break;
case '2':
search_BookName();
break;
case '3':
search_Writer();
break;
case '4':
search_Publisher();
break;
case '5':
search_PublishDate();
break;
case '0':
break;
default:cout << "Input error, please enter again." << endl;
}
}
while(r!='0');
}
static void show_all() //Show all unlent books in stock
{
int i=0;
Book *p;
p=head_ptr->next;
while(p!=NULL)
{
if(strcmp(p->ebook,"0")==0||strcmp(p->paperbook,"0")==0)
{
show_book(p);
i++;
}
p=p->next;
}
cout<<"Finished"<<i<<"Books on shelf"<<endl;
}
static void delete_onebook() //Delete a book
{
string ss;
cout<<"Please enter the ISBN number of the book you want to delete:"<<endl;
cin>>ss;
Book *p,*q;
p = head_ptr;
q=p;
p = p->next ;
while(strcmp(p->ISBN ,&ss[0])!=0)
{
q=p;
p=p->next;
}
if(p==NULL)
{
cout<<"No record of the books you want to delete"<<endl;
}
else
{
q->next=p->next;
p->next=NULL;
delete p;
load_file();
cout<<"Delete successfully!"<<endl;
n=n-1;
}
}
static void delete_allbook() //Delete all books
{
cout<<"Are you sure you delete them all?, please delete them with caution. Please press 1 if you are sure, otherwise press other keys."<<endl;
char h;
cin>>h;
if(h!='1')
{
return;
}
else
{
Book *p,*q;
p = head_ptr->next;
while(p!=NULL)
{
q=p;
p=p->next ;
free(q);
}
head_ptr->next=NULL;
load_file();
cout<<"All books were deleted successfully!"<<endl;
}
}
static void change_content() //Change the information of a book
{
Book *p;
p = search_ISBN();
if(p==NULL)
{
return;
}
string n1,n2,n3,n4,n5,n6,n7;
char i=' ';
do
{
cout << "***********************************************" << endl;
cout << "* Modify Book Information*" << endl;
cout << "* *" << endl;
cout << "* 1. Modify the title *" << endl;
cout << "* *" << endl;
cout << "* 2. Modify the author's name *" << endl;
cout << "* *" << endl;
cout << "* 3. Modify the publication date *" << endl;
cout << "* *" << endl;
cout << "* 4. Modify the e-book (0 is on the shelf, 1 is loaned) *" << endl;
cout << "* *" << endl;
cout << "* 5. Modify the paper book (0 is on the shelf, 1 is loaned) *" << endl;
cout << "* *" << endl;
cout << "* 6. Modify the publisher *" << endl;
cout << "* *" << endl;
cout << "* 7. Introduction to the modification content *" << endl;
cout << "* *" << endl;
cout << "* 0. Return to the previous level *" << endl;
cout << "* *" << endl;
cout << "***********************************************" << endl;
cout<<endl<<endl;
cout <<"Please enter the corresponding function code:"<<endl;
cin >> i;
switch (i)
{
case '1':
cout<<"New Title:"<<endl;
cin>>n1;
strcpy(p->BookName,&n1[0]);//Modify directly in the linked list
break;
case '2':
cout<<"New Author Name:"<<endl;
cin>>n2;
strcpy(p->Writer,&n2[0]);
break;
case '3':
cout<<"New publication date:"<<endl;
cin>>n3;
strcpy(p->PublishDate,&n4[0]);
break;
case '4':
cout<<"E-books (0 for shelf, 1 for loan):"<<endl;
cin>>n4;
strcpy(p->ebook,&n4[0]);
break;
case '5':
cout<<"Modify the paper book (0 is on shelf, 1 is loaned):"<<endl;
cin>>n5;
strcpy(p->paperbook,&n5[0]);
break;
case '6':
cout<<"New Publisher:"<<endl;
cin>>n6;
strcpy(p->Publisher,&n6[0]);
break;
case '7':
cout<<"New content introduction:"<<endl;
cin>>n7;
strcpy(p->BriefIntroduction,&n7[0]);
break;
case '0':
break;
default:cout << "Input error, please enter again." << endl;
}
}while(i!='0');
cout<<"Revised Book"<<endl;
show_book(p);
load_file();
}
static void GoInto_BookInfo(ReaderList rel) //Enter the library information menu
{
Book *p;
Reader *r;
save_file();
rel.save_readerfile();//Download reader information
char i=' ';
do
{
cout << "***********************************************" << endl;
cout << "* Book Information Management*" << endl;
cout << "* *" << endl;
cout << "* 1. New books are included in the library# *" << endl;
cout << "* *" << endl;
cout << "* 2. Find *" << endl;
cout << "* *" << endl;
cout << "* 3.Delete# *" << endl;
cout << "* *" << endl;
cout << "* 4. Modify# *" << endl;
cout << "* *" << endl;
cout << "* 5. Show all books on shelf *" << endl;
cout << "* *" << endl;
cout << "* 6. Clear all book content# *" << endl;
cout << "* *" << endl;
cout << "* 0. Return to the previous level *" << endl;
cout << "* *" << endl;
cout << "***********************************************" << endl;
cout<<"# number is the administrator function, you need to log in to the administrator account <(ˉ^ˉ)> "<<endl;
cout <<"Please enter the corresponding function code:"<<endl;
cin >> i;
switch (i)
{
case '1':
cout<<"Please log in to the administrator's account first and then perform the operation"<<endl;
r = rel.reader_land();//Admin Login
if((r==NULL)||strcmp(r->ReaderName,"guanliyuan")!=0)//Set the administrator as guanliyuan
{
cout<<"You are not an administrator and cannot do this"<<endl;
break;
}
p = AddNewBook();
Add_list(p);
cout<<"New book insertion successfully"<<endl;
break;
case '2':
search();
break;
case '3':
cout<<"Please log in to the administrator's account first and then perform the operation"<<endl;
r = rel.reader_land();//Admin Login
if((r==NULL)||strcmp(r->ReaderName,"guanliyuan")!=0)//Set the administrator as guanliyuan
{
cout<<"You are not an administrator and cannot do this"<<endl;
break;
}
delete_onebook();
break;
case '4':
cout<<"Please log in to the administrator's account first and then perform the operation"<<endl;
r = rel.reader_land();//Admin Login
if((r==NULL)||strcmp(r->ReaderName,"guanliyuan")!=0)//Set the administrator as guanliyuan
{
cout<<"You are not an administrator and cannot do this"<<endl;
break;
}
change_content();
break;
case '5':
show_all();
break;
case '6':
cout<<"Please log in to the administrator's account first and then perform the operation"<<endl;
r = rel.reader_land();//Admin Login
if((r==NULL)||strcmp(r->ReaderName,"guanliyuan")!=0)//Set the administrator as guanliyuan
{
cout<<"You are not an administrator and cannot do this"<<endl;
break;
}
delete_allbook();
break;
case '0':
break;
default:cout << "Input error, please enter again." << endl;
}
}while(i!='0');
}
};
int BookList::n ;
Book* BookList::head_ptr=new Book[sizeof(Book)];
Book* BookList::node=new Book[sizeof(Book)];
void borrowtoreturn(BookList b,ReaderList r)
//Borrowing books and returning books. Determine whether it is "borrowing books" or "returning books". 1 is "borrowing books", 2 is "returning books"
{
int k= 0;
int rsuffix, bsuffix;
string readername,readerpass;//Store the reader's name and password
cout<<"Please enter your name:"<<endl;;
cin >> readername;
Reader *p;
p=r.head_point;
while(p!=NULL)
{
if(strcmp(p->ReaderName,&readername[0])==0)
{
cout<<"Please enter your password:";
cin>> readerpass;
if(strcmp(p->Password,&readerpass[0])==0)
{
cout<<"Login successfully!"<<endl;
k=1;break;
}
else
{
cout<<"Error password!"<<endl;
k=0;return;
}
}
p=p->next;
}
if(k=0)
{
cout<<"Input Error"<<endl; return;
}
char br=' ';
do
{
cout << "***********************************************" << endl;
cout << "* Borrowing / Returning Book*" << endl;
cout << "* *" << endl;
cout << "* 1. Borrowing Book*" << endl;
cout << "* *" << endl;
cout << "* 2. Return to the book *" << endl;
cout << "* *" << endl;
cout << "* 0. Exit *" << endl;
cout << "* *" << endl;
cout << "***********************************************" << endl;
cout<<endl<<endl;
cout <<"Please enter the corresponding function code:"<<endl;
cin>>br;
switch (br)
{
case '1':
b.borrow_book(p);
break;
case '2':
b.return_book(p);
break;
case '0':
break;
default:
cout<<"Input error!"<<endl;
break;
}
} while (br!='0');
}
void mainjiemian() //Main interface //Main interface
{
cout << "***********************************************" << endl;
cout << "* Book Borrowing System*" << endl;
cout << "* *" << endl;
cout << "* 1. Reader Information *" << endl;
cout << "* *" << endl;
cout << "* 2. Library Information *" << endl;
cout << "* *" << endl;
cout << "* 3.Borrow books/return books *" << endl;
cout << "* *" << endl;
cout << "* 4. Help *" << endl;
cout << "* *" << endl;
cout << "* 5. Some instructions on the system *" << endl;
cout << "* *" << endl;
cout << "* 0. Exit the system *" << endl;
cout << "* *" << endl;
cout << "***********************************************" << endl;
cout <<"Please enter the corresponding function code"<<endl;
}
void help()
{
cout<<"You can register, log in, borrow books, and return books"<<endl;
}
void notes()
{
cout<<"===============================================================================================<<endl;
cout<<"THIS FILE IS PART OF Library lending system PROJECT"<<endl;
cout<<"THIS FILE CAN ONLY BE USED FOR LEARNING , NOT FOR COMMERCIAL PROFIT."<<endl;
cout<<"Copyright (c) 2020-2022 Zijin JDD "<<endl;
}
int main()
{
BookList b;
ReaderList r;
char in=' ';
do
{
mainjiemian();
cin >> in;
switch (in)
{
case '1':
r.GoInto_ReaderInfo();
break;
case '2':
b.GoInto_BookInfo(r);
break;
case '3':
b.save_file();//Download library information to link table
r.save_readerfile();//Download reader information to link table
borrowtoreturn(b,r);
break;
case '4':
help();
break;
case '5':
notes();
break;
case '0':
return 0;
default:cout << "Input error, please re-enter." << endl;
}
}
while (in != '0');
system("pause");
return 0;
}
