用书：c程序设计 闫锴 张连浩
书上程序结构混乱 也有很多bug
我也没怎么改 所以输入样例都是严格按照输入输出格式来的 就别吐槽了
另外数据通过二进制文件进行存放更新
#include<stdio.h> #include<stdlib.h> #include<string.h> #include<conio.h> typedef struct { char name[31]; char author[27]; char publish[31]; int store; int total; int usr[10]; int days[10]; int id; }book_info; book_info book[100],*p; void page_title(char *menu_item); void return_confirm(); void read_book_info(book_info book[]); void save_book_info(book_info book[]); void book_add(); int book_show(); int book_search(); int book_delete(); void book_borrow(); void book_return(); int book_edit(); int main(){ read_book_info(book); menu:page_title("操作选单"); int cmd=0; printf("用数字键选择操作\n\n"); printf("\t\t1注册新书\t\t2显示图书\n"); printf("\t\t3查询图书信息\t\t4修改图书信息\n"); printf("\t\t5删除图书\t\t6借阅图书\n"); printf("\t\t7归还图书\t\t8退出系统\n"); printf("请按数字键:\n"); scanf("%d",&cmd); switch(cmd){ case 1:book_add();break; case 2:book_show();break; case 3:book_search();break; case 4:book_edit();;break; case 5:book_delete();break; case 6:book_borrow();break; case 7:book_return();break; case 8:save_book_info(book);return 0; } save_book_info(book); goto menu; } void read_book_info(book_info book[]){ FILE *fp=fopen("my_project","rb+"); if(!fp) printf("open failed!/n"); int i=0; for(i=0;i<100;i++){ if(fread(&book[i],sizeof(book_info),1,fp)!=1){ printf("Ovo"); fclose(fp); break; } } fclose(fp); } void save_book_info(book_info book[]){ int i=0; FILE *fp0=fopen("my_project","wb+"); if(fp0==NULL) printf("open failed!"); for(i=0;i<100;i++){ if(fwrite(&book[i],sizeof(book_info),1,fp0)!=1){ printf("write failed!\n"); } } fclose(fp0); } void page_title(char *menu_item){ printf("\t\t**********欢迎使用草滩帝国大学图书馆管理系统**********\n\n——%s——\n\n",menu_item); } void return_confirm(){ printf("\n按任意键返回******\n"); getchar(); } void book_add(){ int i=0; system("cls"); page_title("注册新书"); for(;i<100;i++){ if(!book[i].id) break; } printf("序号："); scanf("%d",&(book[i].id)); printf("书名："); scanf("%s",book[i].name); printf("作者："); scanf("%s",book[i].author); printf("出版社："); scanf("%s",book[i].publish); printf("数量："); scanf("%d",&(book[i].total)); getchar(); book[i].store=book[i].total; return_confirm(); } int book_show(){ int i,flag=0; system("cls"); for(i=0;i<100;i++){ if(book[i].id!=0){ printf("序号:%d\t",book[i].id); printf("书名:%s\t",book[i].name); printf("作者:%s\t",book[i].author); printf("出版社:%s\t",book[i].publish); printf("存数:%d\t",book[i].store); printf("总数:%d\t\n",book[i].total); flag=1; } } if(!flag) printf("\n没有找到相关记录\n"); return i; } int book_search(){ int n,i,flag=0; n=-1; char nam[30]; system("cls"); page_title("图书查找"); printf("输入书名：\n"); scanf("%s",nam); for(i=0;i<100;i++){ if(!strcmp(nam,book[i].name)){ printf("序号：%d\t",book[i].id); printf("书名：%s\t\n",book[i].name); printf("作者：%s\t",book[i].author); printf("出版社：%s\t\n",book[i].publish); printf("存数：%d\t",book[i].store); printf("总数：%d\t\n",book[i].total); flag=1; n=i; break; } } fflush(stdin); if(!flag) printf("\n未找到相关记录\n"); return n; } int book_edit(){ int i,id_change,n=-1; system("cls"); page_title("修改图书信息"); printf("输入要修改的图书编号："); scanf("%d",&id_change); for(i=0;i<100;i++){ if(book[i].id==id_change){ int book_total=book[i].total; getchar(); /*清除缓冲区*/ printf("修改书名："); gets(book[i].name); printf("修改作者："); gets(book[i].author); printf("修改出版社："); gets(book[i].publish); printf("修改总数："); scanf("%d",&book[i].total); book[i].store+=(book[i].total-book_total); n=i; break; } } if(i==100) printf("未找到相关记录"); return n; } int book_delete(){ int i,j,num,ret; ret=-1; system("cls"); page_title("删除图书"); printf("请输入需要删除书的编号："); scanf("%d",&num); for(i=0;i<100;i++){ if(book[i].id==num){ for(j=i;j<100;j++){ book[j].id=book[j+1].id; strcpy(book[j].name,book[j+1].name); strcpy(book[j].publish,book[j+1].publish); } printf("该书已经删除！"); ret=i; } } if(ret==-1) printf("没有找到相关记录"); fflush(stdin); return ret; } void book_borrow(){ int n,s,i,d; system("cls"); n=book_search(); page_title("借阅图书"); if(n!=-1&&book[n].store>0){ printf("输入借书证编号："); scanf("%d",&s); printf("输入可借阅天数："); scanf("%d",&d); for(i=0;i<10;i++) if(!book[n].usr[i]){ book[n].usr[i]=s; book[n].days[i]=d; book[n].store--; break; } } else if(n!=-1&&book[n].store==0) printf("此书已经全部借出。\n"); else ; return_confirm(); fflush(stdin); } void book_return(){ int n,s,i; n=book_search(); page_title("归还图书"); if(n!=-1&&book[n].store<book[n].total){ printf("借阅者图书证列表：\n"); for(i=0;i<10;i++) if(book[n].usr[i]!=0) printf("[%d]-%d天\n",book[n].usr[i],book[n].days[i]); printf("输入借书证序号："); scanf("%d",&s); for(i=0;i<10;i++){ if(book[n].usr[i]==s){ book[n].usr[i]=0; book[n].days[i]=0; book[n].store++; break; } } } if(n!=-1&&book[n].store==book[n].total) printf("全部归还\n"); else if(n!=-1&&book[n].store<book[n].total) printf("归还成功\n"); else ; return_confirm(); }
