#define NULL 0
#include<iostream>
#include<string.h>

using namespace std;

class  book
{
	public:
		book(string bn,string wn,string rn,int ra,long rnu,char rs,string ln,long lnu,char ls)
		{
			book_name=bn;
			writer_name=wn;
			reader_name=rn;
			reader_age=ra;
			reader_num=rnu;
			reader_sex=rs;
			librarian_name=ln;
			librarian_num=lnu;
			librarian_sex=ls;
			next=NULL;
		}
		book *creat_book(void);
	private:
		string book_name;
		string writer_name;
		string reader_name;
		int reader_age;
		long reader_num;
		char reader_sex;
		string librarian_name;
		long librarian_num;
		char librarian_sex;
		book *next;
};

book::book *creat_book(void)
{
	book *head;
	book *p1, *p2;
	p1= new book;
	p2 = new book;
	int n=0;
	cout<<"";
	delete p1;
	delete p2;
}

int main()
{
}