struct.h

对普通的文件进行加密和解密

#include<string>
using namespace std;

struct reader{
	char readername[25];
	reader *readerlink;
};
struct book{
	char bookname[25];
	int booknum;
	char author[25];
	int store;
	char currentreader[25];
	reader *booklink;
};
struct book1{
	char bkname[25];
	book1 *next;
};
struct reader1{
	char reader1name[25];
	book1 *reader1link;
};