#include #include #include #include #include #include #define LEN sizeof(struct book)#define VLEN sizeof(struct vip)#define SLEN sizeof(struct sales)struct vip *vhead=NULL;struct vip *v1,*v2;struct sales *shead=NULL;struct sales *s1,*s2;int V,S;/*结构体定义*/struct book{char bnum [12];/*书号*/char bname [41];/*书名*/char author [20];/*作者*/float price;/*书价*/int acount;/*书存在本数*/struct book *next;};struct sales{float count;struct sales *snext;};struct vip{char vnum[12];char vname[41];int level;float persum;float discount;struct vip *vnext;};/*函数声明*/void loadbook();/*自动读入书库信息*/void welcome();/*欢迎界面显示*/void inputbook();/*增加书本信息*/void loadvip();void loadsales(); /*自动录入销售信息*/void daysales(); /*日销售额*/void monthsales(); /*月销售额*/void yearsales(); /*年销售额*/void search();/*查询书数量*/void search_by_bnum();/*通过书号查询*/void search_by_bname();/*通过书名查询*/void search_by_author();/*通过作者查询*/void buy();/*购买书籍*/void list();/*列出书库信息*/void listvip();void listsales(); /*列出销售信息*/void delet();/*删除书目*/void delet_by_bnum();/*通过书号删除*/void delet_by_bname();/*通过书名删除*/void delet_by_author();/*通过作者删除*/void save();/*保存记录*/void redef();/*修改密码*/void bover();/*显示已售完的书*/void buy_by_huiyuan(); /*会员买书*/void buy_by_feihuiyuan(); /*非会员买书*/void exit0();/*退出*/int menu();/*主菜单*/void print2();/*显示查询菜单*/void printdelete();/*显示删除菜单*/struct book *head=NULL,*head2=NULL;/*head 和 head2 分别用于书库的头指针和已购书的头指针*/struct book *p1,*p2,*p3,*p4,*p5,*p6; /*p1、p2、p3 用于操作书库图书，p4、p5、p6 用于操作已购书*/int save_flag=0;/*图书信息变动标志*/int buy_flag=0;/*买书时，是否调用过查询功能标志*/int shan_flag=0;/*删书时，是否调用过显示已售完书功能标志*/int T=0;/*记录导入的书本数*/char mima[11]="123456";/*初始密码*...
