# include & ltstdio.h & gt
# include & ltstdlib.h & gt
# include & ltstring.h & gt
//This section declares a structure called book, which is used to store the book information of a book.
Structure book (
//Book name
char book _ name[30]；
//The number of the book
Int edge number;
//The price of books
Double the price;
//The author of this book
Char author [20];
//Inventory status of current books
State of charge [20];
//This book was lent to a man named name.
char name[20]；
//Are these books for men or women?
char sex[ 10]；
//Books are lent to students with student numbers.
Int xuehao;
//This field is a pointer to the book structure, indicating that the author wants to use the linked list to store or manipulate all the book information.
struct book * book _ next
};
//Personal information of the borrower (similar to this)
Structural club {
char name[20]；
char sex[ 10]；
Int xuehao;
//The title of the book borrowed
Char borrow [30];
//Linked list pointer
struct club * club _ next
};
void Print _ Book(struct Book * head _ Book)； /* Browse all book information */
Void Print_Club (structural club * head club); /* Browse all member information */
struct Book * Create _ New _ Book()； /* Create a new library, and it will end when the ISBN is 0 */
//Find the book information according to the given book number.
struct Book * Search _ Book _ bian Hao(int bian Hao，struct Book * head _ Book)；
//Find the book information according to the given book name.
struct Book * Search _ Book _ name(char * b _ name，struct Book * head _ Book)；
//Find the book information according to the given book price.
struct Book * Search _ Book _ price(double price _ h，double price_l，struct Book * head _ Book)；
//Insert a new node in the linked list.
struct Book * Insert _ Book(struct Book * head _ Book，struct Book * stud _ Book)； /* Add books one by one */
//Delete a node in the linked list.
struct Book * Delete _ Book(struct Book * head _ Book，int bianhao)； /* Delete books */
//Create a new borrower information structure
struct Club * Create _ New _ Club()；
//Find the borrower's information according to the given student number.
struct Club * Search _ Club _ xuehao(int xuehao，struct Club * head _ Club)；
//Find the borrower information according to the given borrower name.
Structural club * search _ club _ name (char * c _ name, structural club * head _ club);
//Insert a new node in the borrower information linked list.
struct Club * Insert _ Club(struct Club * head _ Club，struct Club * stud _ Club)；
//Delete the node in the borrower information linked list.
Struct club * delete _ club (struct club * head _ club, int student number);
//Borrow a book
struct Book * Lent _ Book(int bian Hao，int xuehao，struct book *head_book，struct club * head _ club)；
//Return the book
struct book *back(int bianhao，int xuehao，struct book *head_book，struct club * head _ club)；
//Console program entry point function
int main()
{
//Next, there are many variables to create.
Structure book * head _ book, * p _ book;
Char book_name[30], name [20], author [20], gender [10];
Int edge number;
Double price, price_h, price _ l；;
int size _ book = sizeof(struct book)；
int m= 1，n= 1，f；
char *b_name，* c _ name
Structure club *head_club, * p _ club
Int xuehao;
int size _ club = sizeof(struct club)；
All hands-on, hoping to help the landlord.