c语言结课作业

用书：c程序设计  闫锴 张连浩

关于代码

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();
} 

        测试样例运行结果