#include?
#include?
struct?book
{
????int?bid;
????char?bname[20];
????int?ISBN[20];
????int?bstatus;

????struct?book*?l;
????struct?book*?r;
????int?leaf;
};
struct?user
{
????int?uid;
????char?uname[20];
????int?tel[20];
????char?address[20];

????struct?user*?l;
????struct?user*?r;
????int?leaf;
};
struct?rent
{
????int?lid;
????int?user_id;
????int?book_id;
????int?status;

????struct?rent*?l;
????struct?rent*?r;
????int?leaf;
};

void?add_book（struct?book*?p?int?bid）;//根據id增加一條book信息
struct?book*?get_book_byID（struct?book*?p?int?id）;//根據id查找結點
struct?book*?get_prebook_byID（struct?book*?p?int?bid）;//根據id查找出來的樹葉的前一個節點
void?bookpreTraverse（struct?book*?p）;//前序遍歷

void?add_user（struct?user*?p?int?id）;
struct?user*?get_user_

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????42603??2017-07-10?21:38??level3\bin\Debug\level3.exe

?????文件???????1107??2017-07-10?12:05??level3\level3.cbp

?????文件????????101??2017-07-11?14:15??level3\level3.depend

?????文件????????356??2017-07-11?14:30??level3\level3.layout

?????文件??????22018??2017-07-10?21:38??level3\main.c

?????文件??????18970??2017-07-10?21:38??level3\obj\Debug\main.o

?????目錄??????????0??2017-07-10?21:38??level3\bin\Debug

?????目錄??????????0??2017-07-10?21:38??level3\obj\Debug

?????目錄??????????0??2017-07-10?12:17??level3\bin

?????目錄??????????0??2017-07-10?12:17??level3\obj

?????目錄??????????0??2017-07-11?14:30??level3

-----------?---------??----------?-----??----

????????????????85155????????????????????11