#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*
