C语言图书管理系统课程设计报告 - 副本(2)

for(;p!=NULL;p=p->next) { }

fclose(fp);

printf("信息已保存。"); }

void holdcx(link *t) {

link *p=NULL; FILE *fp;

fp=fopen("查询.txt","a+"); p=t;

fprintf(fp,"查询到的信息为：\n"); fprintf(fp,"\n");

fprintf(fp,"\n**************************************fprintf(fp,"\n编号\t\t书名\t\t作者\t\t出版社\t\t出fprintf(fp,"\n");

fprintf(fp,"%s\t%s\t%s\t%s\t%s",p->number,p->booknamfprintf(fp,"\t\t%.2f",p->price);

fprintf(fp,"%s\t%s\t%s\t%s\t%s",p->number,p->booknamfprintf(fp,"\t\t%.2f",p->price); fprintf(fp,"\t\t%s",p->status); fprintf(fp,"\n");

e,p->author,p->publish,p->time);

************\n");

版时间\t\t价格\t\t状态\n");

e,p->author,p->publish,p->time);

}

fprintf(fp,"\t\t%s",p->status); fprintf(fp,"\n"); fclose(fp);

printf("信息已保存!!!");

link *findnumber(link *head) {

char key[100]; link *h,*t1=NULL;

printf("请输入图书的编号："); getchar(); gets(key);

for(h=head;h!=NULL;h=h->next) {

if(strcmp(key,h->number)==0) { }

return t1; }

link *findboookname(link *head) {

char key[100]; link *h,*t2=NULL;

t1=h; break;

}

printf("请输入图书的书名："); getchar(); gets(key);

for(h=head;h!=NULL;h=h->next) {

if(strcmp(key,h->bookname)==0) { }

return t2; }

link *findauthor(link *head) {

char key[100]; link *h,*t3=NULL;

printf("请输入作者姓名："); getchar(); gets(key);

for(h=head;h!=NULL;h=h->next) {

if(strcmp(key,h->author)==0) {

t3=h; break; t2=h; break;

}

}

}

return t3; }

link *sortnumber(link *head) {

link *p,*q,*temp;

temp=(link *)malloc(sizeof(link)); if(temp==NULL) { }

for(p=head;p!=NULL;p=p->next) {

{

if(strcmp(p->number,q->number)>0) strcpy(temp->number,p->number); strcpy(temp->bookname,p->bookname); strcpy(temp->author,p->author); strcpy(temp->publish,p->publish); strcpy(temp->time,p->time); temp->price=p->price;

strcpy(temp->status,p->status);

strcpy(p->number,q->number); {

printf("申请内存出错！！！"); exit(1);

for(q=p->next;q!=NULL;q=q->next)

}

strcpy(p->bookname,q->bookname); strcpy(p->author,q->author); strcpy(p->publish,q->publish); strcpy(p->time,q->time); p->price=q->price;

strcpy(p->status,temp->status);

strcpy(q->bookname,temp->bookname); strcpy(q->author,temp->author); strcpy(q->publish,temp->publish); strcpy(q->time,temp->time); q->price=temp->price;

strcpy(q->status,temp->status);

strcpy(q->number,temp->number);

} }

}

return head;

link *borrowbook(link *head) {

link *h,*p;

char ch,ch1[100]="在库",ch2[100]="不在库"; h=head;

printf("\n******************************************printf("\t\t欢迎使用借书系统!!!\n");

********\n");

}

p=findboookname(h); if(p==NULL)

printf("借书失败，书库中没有这本书！！！"); else if(strcmp(p->status,ch2)==0) printf("借书失败，图书不在库！！！"); else {

printf("确认借出？Y/N:"); scanf("%c",&ch); getchar();

if(ch=='Y'||ch=='y') {

strcpy(p->status,ch2); }

if(ch=='N'||ch=='n') { } }

printf("你没有借任何书！！！");

printf("借书成功，请返回上级菜单保存信息！！！");

return head;

link *returnbook(link *head) {

link *h,*p;

char ch,ch1[100]="在库",ch2[100]="不在库"; h=head;

printf("\n******************************************printf("\t\t欢迎使用还书系统!!!\n"); p=findboookname(h); if(p==NULL)

printf("还书失败，这不是本书库的书！！");

********\n");

else {

printf("确认还书？Y/N:"); scanf("%c",&ch);

getchar(); if(ch=='Y'||ch=='y') {

strcpy(p->status,ch1);

printf("还书成功，请返回上级菜单保存信息！！！"); }

if(ch=='N'||ch=='n') { }

printf("你没有还书！！！");

}

return head; }

void main() {

int a,b,c,d; link *h,*t;