#include#include#includestruct book{int num;char bname[50];char wname[20];char press[50];char sort[50];int time;float price; struct book *next;};struct book *creatbook(); //创建链表struct book *addbook(struct book *head); //添加图书int yanzheng(struct book *head,int m); //验证新添加的图书编码是否已存在void deletebook(struct book *head); //删除图书void fprint(struct book *head); //将链表写入文件struct book *load(); //从文件中读取信息并建成链表void print_book(struct book *head); //将链表信息输出void chaxun(struct book *head); //查询图书信息void num_chaxun(struct book *head); //按图书编号查询图书void wname_chaxun(struct book *head); //按作者名查询图书void sort_chaxun(struct book *head); //按类别查询图书void time_chaxun(struct book *head); //按出版时间查询图书void bname_chaxun(struct book *head); //按图书名查询图书void xiugai(struct book *head); //修改图书信息void paixu(struct book *head); //对图书进行排序void num_paixu(struct book *head); //按图书编号排序void time_paixu(struct book *head); //按图书出版时间排序void price_paixu(struct book *head); //按图书价格排序void bname_paixu(struct book *head); //按图书名排序void wname_paixu(struct book *head); //按作者名排序int main(){int choice,n,x,y=1,c,c1=1234;char a,d,b[10],b1[10]="yjk";struct book *head=NULL;while(y){system("cls"); printf("\n\n\n\n\n\n\n"); printf(" ********** 欢迎光临 **********\n\n"); printf(" ********************** 图书信息管理系统 ************************\n\n\n");printf("\n\n");printf(" ============1-用户登录===========\n");printf(" ============0-退出系统===========\n");printf(" 请输入您的选择:");scanf("%d",&n);printf("\n");getchar();switch(n){case 0:y=0;break;case 1: printf(" 请输入您的用户名:"); gets(b); printf("\n"); printf(" 请输入您的密码:"); scanf("%d",&c); printf("\n"); if(strcmp(b,b1)!=0||c!=c1){ printf(" 验证失败,请重新输入!\n"); scanf("%c",&d);...
