Chanhaeng Lee lch32111

## library management program in c(practice)
/* I want to make library(book) management program. */
#include <stdio.h>

// a function adding a new book.
int enroll_book(char(*book_name)[100], char(*book_writer)[100], char(*book_publisher)[100], int *book_length);

// a function shoinwg the information of all books in library
int display_all(char(*book_name)[100], char(*book_writer)[100], char(*book_publisher)[100], int *borrow, int *book_length);

// a function showing the information of the book by searching
	/* I want to make library(book) management program. */
	#include <stdio.h>

	// a function adding a new book.
	int enroll_book(char(book_name)[100], char(book_writer)[100], char(book_publisher)[100], int book_length);

	// a function shoinwg the information of all books in library
	int display_all(char(book_name)[100], char(book_writer)[100], char(book_publisher)[100], int borrow, int *book_length);

	// a function showing the information of the book by searching