cout<<"\t\t\t4----------------图书信息删除\n";
cout<<"\t\t\t0----------------退出图书管理系统\n";
cout<<"\t\t*****************************************\n";
cout<<"\t\t 请输入选择: ";
fflush(stdin);
cin>>a;
switch(a)
{case 1:
system("cls");
fp=fopen(stuf,"w");
do{cout<<"输入登录号: ";
cin>>id;
cout<<"输入书名: ";
cin>>bookname;
cout<<"输入作者名: ";
cin>>author;
cout<<"输入书类别: ";
cin>>classnum;
cout<<"输入出版社名: ";
cin>>publisher;
cout<<"输入价格: ";
cin>>price;
cout<<"输入该书数量: ";
cin>>num;
cout<<"输入该书出版日期: ";
cin>>year>>month;
l1.book1[m].set(id,bookname,author,classnum,publisher,price,year,month,num);m++;
fprintf(fp,"%s\t%s\t%s\t%s\t%s\t%6.2f\t%d\t%d\t%d\n",id,bookname,author,classnum,publisher,pri
ce,year,month,num);
cout<<"是否继续输入(Y/N): ";
cin>>c;}while(c=='y' || c=='Y');
getchar();break;
case 2:
system("cls");
for(j=0;j
cout<<"\t\t\t2----------按作者名搜索"<>a;
switch(a)
{case 1:l1.NameSeek();break;
case 2:l1.AuthorSeek();break;
case 0:return;
default:cout<<"非法输入!";}break;
case 4:system("cls");
int flag;
cout<<"请输入要删除图书的登录号: ";
cin>>id;
flag=l1.idSeek(id);
if(flag==1){cout<<"没有该书,因此不能删除!";}
else
{if(flag!=m)
{for(;flag