图书馆管理系统源码
create database library
on primary
(name='library_1',
filename='C:\data\library_1.mdf',
size=5MB,
maxsize=30MB,
filegrowth=15%)
log on
(name='library_2',
filename='C:\data\library_1.ldf',
size=3MB,
maxsize=20MB,
filegrowth=15%)
use library
create table readernote
(readerno char(5) not null primary key,
unit varchar(20) not null,
name varchar(8) not null,
sex char(2) not null,
job varchar(8),
address varchar(20) not null)
insert into readernote values('00001','学校','张3','男','主任')
insert into readernote values('00002','学校','李四','男','学生',')
insert into readernote values('00003','学校','王5','女','主任')
insert into readernote values('00004','学校','赵6','男','教师')
insert into readernote values('00005','学校','徐7','女','教师')
create table book
(bookno char(8) not null primary key,
classno char(5) not null,
bookname varchar(20) not null,
author varchar(8) not null,
cbunit varchar(20) not null,
price int not null)
insert into book values('00000001','00001','计算机网络','张平','清华大学出版社',38)
insert into book values('00000002','00002','计算机组成原理','章江','清华大学出版社',35)
insert into book values('00000003','00003','计算机语言','李明','清华大学出版社',50)
insert into book values('00000004','00004','数据库设计','刘阳','清华大学出版社',32)
insert into book values('00000005','00005','专业英语','李冬','清华大学出版社',22)
create table borrow
(readerno char(5) not null,
bookno char(8) not null,
borrowdatetime datetime not null,
returndatetime datetime not null,
primary key(readerno,bookno),
foreign key(readerno)references readernote(readerno),
foreign key(bookno)references book(bookno))
insert into borrow values('00001','00000001','2011-01-02','2011-02-01')
insert into borrow values('00002','00000002','2011-02-02','2011-03-01')
insert into borrow values('00003','00000003','2011-03-02','2011-04-01')
insert into borrow values('00004','00000004','2011-04-02','2011-05-01')
insert into borrow values('00005','00000005','2011-05-02','2011-06-01')
create table librarymanager
(jobno char(3) not null primary key,
name varchar(8) not null,
sex char(2) not null,
borndatetime datetime not null,
jobname varchar(10) not null,
salary int not null)
insert into librarymanager values('001','姜某','男','1963-09-11','主任',2000)
insert into librarymanager values('002','王某','女','1964-09-11','副主任',1800)
insert into librarymanager values('003','陈某','男','1980-09-11','管理员',1500)
create login mylogin2
with password='password',
check_policy=off
create user sysadmin for login mylogin2
exec sp_addrolemember 'db_owner','sysadmin'
grant all privileges on dbo.readernote to sysadmin
with grant option
grant all privileges on dbo.borrow to sysadmin
with grant option
grant all privileges on dbo.book to sysadmin
with grant option
grant all privileges on dbo.librarymanager to sysadmin
with grant option
create login mylogin3
with password='password',
check_policy=off
create user admin1 for login mylogin3
exec sp_addrolemember 'db_owner','admin1'
create login mylogin4
with password='password',
check_policy=off
create user admin2 for login mylogin4
exec sp_addrolemember 'db_datareader','admin2'grant all privileges on dbo.readernote to admin1
grant all privileges on dbo.borrow to admin1
grant all privileges on dbo.book to admin1
revoke alter on librarymanager from admin1
grant select on borrow to admin2
create procere st
@jobno int
As select * from librarymanager
Where jobno=@jobno
Create procere st1
@readerno int
As select * from borrow
Where readerno=@readerno
Grant exec on st to admin1
Grant exec on st1 to admin2
exec st @jobno=01
exec st1 @readerno=00001
select * from book
应该比较接近了。你自己再改改
㈡ 求图书馆管理系统C++源代码
#include<iostream>
#include<fstream>
#include<windows.h>
#include<stdlib.h>
using namespace std;
void mainmenu();
void Manage_Book();
void input_Book();
void input_Reader();
void New_Book();
void Seek_Book();
void Borrow_Manage();
void Borrow_Book();
void Return_Book();
void Output_Message();
void Exit_System();
int u,v=3,k=0;
struct Book
{
char name[20];
int booknumber;
int num_present;
int num_all;
}book[1000];
struct Reader
{
char name[20];
int readernumber;
int card;
}reader[3];
void mainmenu()
{
int Num_Choice1,flag=1;
system("color E");
for(;k<=0;k++)
{
input_Book();
input_Reader();
}
while(flag==1)
{
system("cls");
cout<<"\t\t\t◆◆◆◆◆主菜单◆◆◆◆◆"<<endl
<<"\t\t\t☆ 1.图书管理 ☆"<<endl
<<"\t\t\t☆ 2.借阅管理 ☆"<<endl
<<"\t\t\t☆ 3.输出信息 ☆"<<endl
<<"\t\t\t☆ 4.退出系统 ☆"<<endl
<<"\t\t\t◆◆◆◆◆◆◆◆◆◆◆◆◆"<<endl;
cout<<"请输入所需要的服务编码"<<endl;
cin>>Num_Choice1;
switch(Num_Choice1)
{
case 1:
Manage_Book();
break;
case 2:
Borrow_Manage();
break;
case 3:
Output_Message();
break;
case 4:
Exit_System();
flag=0;
break;
default:
flag=0;
cout<<"输入有误!!"<<endl;
}
}
}
void Manage_Book()
{
int flag1=1,Num_Choice2;
system("cls"); while(flag1==1)
{
cout<<"\t\t\t◆◆◆◆◆◆◆◆◆◆◆◆◆"<<endl
<<"\t\t\t☆ 1.新书入库 ☆"<<endl
<<"\t\t\t☆ 2.图书查询 ☆"<<endl
<<"\t\t\t☆ 3.返回主菜单 ☆"<<endl
<<"\t\t\t◆◆◆◆◆◆◆◆◆◆◆◆◆"<<endl;
cin>>Num_Choice2;
switch(Num_Choice2)
{
case 1:
flag1=2;
New_Book();
break;
case 2:
flag1=2;
Seek_Book();
break;
case 3:
mainmenu();
default:
flag1=1;
cout<<"输入有误!"<<endl;
system("pause");
system("cls");
}
}}
void input_Book()
{
cout<<"请依照提示输入现有的三本图书的信息："<<endl;
for(int i=0;i<3;i++)
{
cout<<"书名："<<endl;
cin>>book[i].name;
cout<<"书号："<<endl;
cin>>book[i].booknumber;
cout<<"库存量："<<endl;
cin>>book[i].num_all;
cout<<"现存量："<<endl;
cin>>book[i].num_present;
}
}
void New_Book()
{
system("cls");
int j;
char newbook_name[20];
cout<<"请输入新书书名："<<endl;
cin>>newbook_name;
for(j=0;j<1000;j++)
{
if(strcmp(newbook_name,book[j].name)==0)
{
book[j].num_all++;
book[j].num_present++;
break;
}
}
if(j==1000)
{
cout<<"请为此新书编号："<<endl;
v++;
cin>>book[v].booknumber;
strcpy(book[v].name,newbook_name);
book[v].num_all=1;
book[v].num_present=1;
}
else cout<<"已有此书，库存量加一"<<endl;
system("pause");
}
void Seek_Book()
{
system("cls");
int k,booknumber;
cout<<"请输入所要查询的书号："<<endl;
cin>>booknumber;
for(k=0;k<1000;k++)
{
if(book[k].booknumber==booknumber)
{
cout<<"书号："<<booknumber<<endl;
cout<<"书名："<<book[k].name<<endl;
cout<<"库存量："<<book[k].num_all<<endl;
cout<<"现存量："<<book[k].num_present<<endl;
system("pause");
break;
}
}
if(k==1000)
{
cout<<"未找到此书！！"<<endl;
system("pause");
}
}
void Borrow_Manage()
{
int flag=1;
system("cls");
int Num_Choice3;
while(flag==1)
{
cout<<"\t\t\t◆◆◆◆◆◆◆◆◆◆◆◆◆"<<endl
<<"\t\t\t☆ 1.借书登记 ☆"<<endl
<<"\t\t\t☆ 2.还书管理 ☆"<<endl
<<"\t\t\t☆ 3.返回主菜单 ☆"<<endl
<<"\t\t\t◆◆◆◆◆◆◆◆◆◆◆◆◆"<<endl;
cin>>Num_Choice3;
switch(Num_Choice3)
{
case 1:
flag=2;
Borrow_Book();
break;
case 2:
flag=2;
Return_Book();
break;
case 3:
mainmenu();
default:
flag=1;
cout<<"输入有误!!"<<endl;
system("pause");
}
system("cls");
}
}
void input_Reader()
{
system("cls");
cout<<"请依照提示输入现有的三位读者的信息："<<endl;
for(int m=0;m<3;m++)
{
cout<<"姓名："<<endl;
cin>>reader[m].name;
cout<<"编号："<<endl;
cin>>reader[m].readernumber;
reader[m].card=0;
}
}
void Borrow_Book()
{
system("cls");
char reader_name[20];
int n,book_number;
cout<<"请输入读者姓名："<<endl;
cin>>reader_name;
for(n=0;n<3;n++)
{
if(strcmp(reader_name,reader[n].name)==0)
{
if(reader[n].card!=0)
{
cout<<"已借书，不能再借，请按任意键返回"<<endl;
system("pause");
mainmenu();
}
else
break;
}
}
if(n==3)
{
cout<<"无此读者！输入有误！！按任意键返回主菜单"<<endl;
system("pause");
mainmenu();
}
cout<<"请输入所借图书书号："<<endl;
cin>>book_number;
for(n=0;n<v;n++)
{
if(strcmp(reader_name,reader[n].name)==0)
reader[n].card=book_number;
}
for(n=0;n<v;n++)
{
if(book[n].booknumber==book_number)
{
if(book[n].num_present==0)
{
cout<<"该书已经被借完，请按任意键返回"<<endl;
system("pause");
for(n=0;n<v;n++)
{
if(strcmp(reader_name,reader[n].name)==0)
reader[n].card=0;
}
mainmenu();
}
else
{
book[n].num_present--;
cout<<"借书成功，请按任意键返回"<<endl;
system("pause");
break;
}
}
}
if(n==v)
{
for(n=0;n<v;n++)
{
if(strcmp(reader_name,reader[n].name)==0)
reader[n].card=0;
}
cout<<"所输入的书号不存在,请按任意键返回主菜单"<<endl;
system("pause");
mainmenu();
}
}void Return_Book()
{
system("cls");
int j;
char reader_name[20];
int book_number;
cout<<"请输入读者姓名："<<endl;
cin>>reader_name;
for(j=0;j<3;j++)
{
if(strcmp(reader_name,reader[j].name)==0)
break;
}
if(j==3)
{
cout<<"无此读者！输入有误！！按任意键返回主菜单"<<endl;
system("pause");
mainmenu();
}
cout<<"请输入所还图书书号："<<endl;
cin>>book_number;
for(j=0;j<3;j++)
{
if(strcmp(reader_name,reader[j].name)==0)
{
if(book_number==reader[j].card)
{
reader[j].card=0;
for(j=0;j<v;j++)
{
if(book[j].booknumber==book_number)
{
book[j].num_present++;
cout<<"还书成功，请按任意键返回"<<endl;
system("pause");
break;
}
}
}
else
{
cout<<"该读者未借此书"<<endl;
system("pause");
}
}
if(j==v)
cout<<"所输入的书号不存在："<<endl;
}
}
void Output_Message()
{
system("cls");
int q;
cout<<"以下是图书信息"<<endl<<endl;
for(q=0;q<v;q++)
{
cout<<"书号："<<book[q].booknumber<<'\t';
cout<<"书名："<<book[q].name<<'\t';
cout<<"库存量："<<book[q].num_all<<'\t';
cout<<"现存量："<<book[q].num_present<<endl;
}
cout<<"以下是读者信息"<<endl<<endl;
for(q=0;q<3;q++)
{
cout<<"姓名："<<reader[q].name<<'\t'
<<"编号："<<reader[q].readernumber<<'\t'
<<"所借书号："<<reader[q].card<<endl;
}
system("pause");
}
void Exit_System()
{
system("cls");
cout<<"欢迎下次使用，谢谢"<<endl;
system("pause");
}
void main()
{
mainmenu();
}
㈢ c语言程序设计图书馆源代码
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
typedef int BOOL;
typedef struct bookinfo
{
char number[15];/*产品编号*/
char name[30];/*产品名称*/
float price;/*单价*/
char auther[20];/*作者*/
BOOL isExit;/*存在状态*/
char lendername[20];/*借书人姓名*/
char lendersex[2];/*借书人性别*/
char lendernum[15];/*借书人学号*/
}BOOKINFO;
void menu()
{
printf("\n\n\n\n\n\n\n");
printf("\t\t\t图书管理系统\n");
printf("\t\t\t1:新进图书基本信息的输入\n");
printf("\t\t\t2:显示全部记录\n");
printf("\t\t\t3:根据图书名称查询图书基本信息\n");
printf("\t\t\t4:根据图书名称对撤销的图书信息进行删除\n");
printf("\t\t\t5:按照图书名称从小大到排序\n");
printf("\t\t\t6:统计某价格以上的图书数量\n");
printf("\t\t\t7:列出所有未借出去的图书信息\n");
printf("\t\t\t8:退出\n");
}
void choice_1_input_new()/*输入新进的图书信息*/
{
char choice;
FILE *p;
BOOKINFO newbook;
system("cls");
while(1)
{
printf("输入图书编号:");
gets(newbook.number);
printf("输入图书名称:");
gets(newbook.name);
printf("输入图书单价:");
scanf("%f",&newbook.price);
while(getchar()!='\n');
printf("输入图书的作者:");
gets(newbook.auther);
printf("输入借书人姓名:");
gets(newbook.lendername);
printf("输入借书人性别:");
gets(newbook.lendersex);
printf("输入借书人学号:");
gets(newbook.lendernum);
printf("是否保存该条书目?(Y/N)\n");
if(choice=='Y'||choice=='y')
{
newbook.isExit=1;/*将图书状态设置成1，表示没有借出*/
p=fopen("c:\\bookinfo.data","ab");
fwrite(&newbook,sizeof(BOOKINFO),1,p);
fclose(p);
printf("\n该条书目已添加到c:\\bookinfo.data文件中!\n");
}
else
{
printf("\n本条书目未保存!\n");
}
printf("\n是否继续添加书目?(Y/N)\n");
while(choice!='Y'&&choice!='y'&&choice!='N'&&choice!='n')
if(choice=='Y'||choice=='y')
continue;
else
break;
}
}
void choice_2_display_all()/*显示全部图书信息*/
{
FILE *p;
int n;
BOOKINFO bookinfo[100];
int booknumber=0;
system("cls");
p=fopen("c:\\bookinfo.data","rb");
while(!feof(p))
{
fread(&bookinfo[booknumber],sizeof(BOOKINFO),1,p);
booknumber++;
}
/*booknumber--;使用feof()函数会多读一行，因此需要booknumber自减一次，使书目的数量正确*/
fclose(p);
booknumber--;
if(booknumber==0)
{
printf("没有任何图书信息!\n\n");
}
else
{
n=0;
printf(" 图书信息如下\n");
printf(" 图书信息 | 借书人信息 \n");
printf("编号 名称 单价 作者 图书状态 | 姓名 性别 学号\n");
while(n<booknumber)
{
printf("%-6s%-12s%-8.1f%-8s%-9d| %-12s%-8s%-8s\n",
bookinfo[n].number,bookinfo[n].name,bookinfo[n].price,
bookinfo[n].auther,bookinfo[n].isExit,bookinfo[n].lendername,
bookinfo[n].lendersex,bookinfo[n].lendernum);
n++;
}
}
printf("\n\n按任意键回到主菜单!\n");
}
void choice_3_search_according_name()/*根据图书名称显示图书的信息*/
{
char search[20]="";/*search用来存放要查询的书名*/
int n;
FILE *p;
char choice;
BOOKINFO bookinfo[100];
int booknumber=0;
system("cls");
p=fopen("c:\\bookinfo.data","rb");
while(!feof(p))
{
fread(&bookinfo[booknumber],sizeof(BOOKINFO),1,p);
booknumber++;
}
booknumber--;/*使用feof()函数会多读一行，因此需要booknumber自减一次，使书目的数量正确*/
fclose(p);
while(1)
{
printf("输入要查询的书本名称:");
gets(search);
if(booknumber==0)
{
printf("书库中没有任何信息!\n\n");
printf("按任意键回到主菜单!\n\n");
getch();
break;
}/*if结束*/
else
{
for(n=0;n<booknumber;n++)
if(strcmp(bookinfo[n].name,search)==0)
{
printf("该书的详细信息如下:\n");
printf(" 图书信息 | 借书人信息 \n");
printf("编号 名称 单价 作者 图书状态 | 姓名 性别 学号\n");
printf("%-6s%-12s%-8.1f%-8s%-9d| %-12s%-8s%-8s\n",
bookinfo[n].number,bookinfo[n].name,bookinfo[n].price,
bookinfo[n].auther,bookinfo[n].isExit,bookinfo[n].lendername,
bookinfo[n].lendersex,bookinfo[n].lendernum);
break;
}
if(n>=booknumber)
printf("没有查找该书的任何信息!\n");
printf("\n\n是否继续查询?(Y/N)\n");
choice=getch();
while(choice!='Y'&&choice!='y'&&choice!='N'&&choice!='n')
choice=getch();
if(choice=='Y'||choice=='y')
continue;
else
break;
}/*else结束*/
}/*while(1)结束*/
}
void choice_4_delete_according_name()/*根据图书名称对图书信息进行删除*/
{
char search[20]="";/*search用来存放要删除的书名*/
int n,i;
FILE *p;
char choice;
BOOKINFO bookinfo[100];
int booknumber;
system("cls");
while(1)
{
printf("输入要删除的书本名称:");
gets(search);
p=fopen("c:\\bookinfo.data","rb");
booknumber=0;
while(!feof(p))
{
fread(&bookinfo[booknumber],sizeof(BOOKINFO),1,p);
booknumber++;
}
booknumber--;/*使用feof()函数会多读一行，因此需要booknumber自减一次，使书目的数量正确*/
fclose(p);
if(booknumber==0)
{
printf("书库中没有任何信息!\n\n");
printf("按任意键回到主菜单!\n\n");
getch();
break;
}/*if结束*/
else
{
for(n=0;n<booknumber;n++)
if(strcmp(bookinfo[n].name,search)==0)
{
break;
}
if(n>=booknumber)
printf("没有查找该书的任何信息!\n");
else
{
printf("是否确认需要删除该条书目?(Y/N)");
choice=getch();
while(choice!='Y'&&choice!='y'&&choice!='N'&&choice!='n')
choice=getch();
if(choice=='Y'||choice=='y')
{
for(i=n;i<booknumber-1;i++)
bookinfo[i]=bookinfo[i+1];
booknumber--;
p=fopen("c:\\bookinfo.data","wb");
for(n=0;n<booknumber;n++)
fwrite(&bookinfo[n],sizeof(BOOKINFO),1,p);
fclose(p);
printf("删除成功!\n");
}
else
printf("\n\n该条书目没有被删除!");
}
printf("\n\n是否继续进行删除操作?(Y/N)\n");
choice=getch();
while(choice!='Y'&&choice!='y'&&choice!='N'&&choice!='n')
choice=getch();
if(choice=='Y'||choice=='y')
continue;
else
break;
}/*else结束*/
}/*while(1)结束*/
}
void choice_5_sort_according_name()/*根据图书名称排序*/
{
FILE *p;
int m,n;
BOOKINFO temp;
BOOKINFO bookinfo[100];
int booknumber;
p=fopen("c:\\bookinfo.data","rb");
booknumber=0;
system("cls");
while(!feof(p))
{
fread(&bookinfo[booknumber],sizeof(BOOKINFO),1,p);
booknumber++;
}
booknumber--;/*使用feof()函数会多读一行，因此需要booknumber自减一次，使书目的数量正确*/
fclose(p);
if(booknumber==0)
{
printf("没有任何图书信息!\n\n");
}
else
{
for(m=0;m<booknumber-1;m++)
for(n=m+1;n<booknumber;n++)
if(strcmp(bookinfo[m].name,bookinfo[n].name)>0)
{
temp=bookinfo[m];
bookinfo[m]=bookinfo[n];
bookinfo[n]=temp;
}
p=fopen("c:\\bookinfo.data","wb");
for(m=0;m<booknumber;m++)
fwrite(&bookinfo[m],sizeof(BOOKINFO),1,p);
fclose(p);
printf("\n\n完成排序!\n\n");
}
printf("按任意键回到主菜单!\n");
getch();
}
void choice_6_display_high_price()/*根据价格列出图书信息*/
{
float price;
FILE *p;
int n;
int count=0;
BOOKINFO bookinfo[100];
int booknumber;
system("cls");
printf("请输入价格:");
scanf("%f",&price);
p=fopen("c:\\bookinfo.data","rb");
booknumber=0;
while(!feof(p))
{
fread(&bookinfo[booknumber],sizeof(BOOKINFO),1,p);
booknumber++;
}
booknumber--;/*使用feof()函数会多读一行，因此需要booknumber自减一次，使书目的数量正确*/
fclose(p);
if(booknumber==0)
{
printf("没有任何图书信息!\n\n");
}
else
{
for(n=0;n<booknumber;n++)
{
if(bookinfo[n].price>=price)
count++;
}
if(count==0)
printf("书库中没有比%.1f$价格高的图书!",price);
else
{
printf(" 价格高于%.1f$的图书信息如下\n",price);
printf(" 图书信息 | 借书人信息 \n");
printf("编号 名称 单价 作者 图书状态 | 姓名 性别 学号\n");
for(n=0;n<booknumber;n++)
{
if(bookinfo[n].price>=price)
printf("%-6s%-12s%-8.1f%-8s%-9d| %-12s%-8s%-8s\n",
bookinfo[n].number,bookinfo[n].name,bookinfo[n].price,
bookinfo[n].auther,bookinfo[n].isExit,bookinfo[n].lendername,
bookinfo[n].lendersex,bookinfo[n].lendernum);
}
}
}
printf("\n\n按任意键回到主菜单!\n");
getch();
}
void choice_7_display_according_exitflag()/*根据存在状态列出图书信息*/
{
FILE *p;
int n;
int count=0;
BOOKINFO bookinfo[100];
int booknumber;
system("cls");
booknumber=0;
p=fopen("c:\\bookinfo.data","rb");
while(!feof(p))
{
fread(&bookinfo[booknumber],sizeof(BOOKINFO),1,p);
booknumber++;
}
booknumber--;
fclose(p);
if(booknumber==0)
{
printf("书库中没有任何书目存在!\n");
}
else
{
for(n=0;n<booknumber;n++)
if(bookinfo[n].isExit==1)
count++;
if(count==0)
printf("书库中的书籍全部借出!\n");
else
{
printf("书库中未被借出的图书信息如下:\n\n");
printf(" 图书信息 | 借书人信息 \n");
printf("编号 名称 单价 作者 图书状态 | 姓名 性别 学号\n");
for(n=0;n<booknumber;n++)
if(bookinfo[n].isExit==1)
{
printf("%-6s%-12s%-8.1f%-8s%-9d| %-12s%-8s%-8s\n",
bookinfo[n].number,bookinfo[n].name,bookinfo[n].price,
bookinfo[n].auther,bookinfo[n].isExit,bookinfo[n].lendername,
bookinfo[n].lendersex,bookinfo[n].lendernum);
}
}
}
printf("\n按任意键返回主菜单!\n");
getch();
}
void main()
{
char choice;
clock_t tm;
FILE *p;
if((p=fopen("c:\\bookinfo.data","rb"))==NULL)
{
p=fopen("c:\\bookinfo.data","wb");
fclose(p);
}
while(1)
{
system("cls");
menu();
choice=getch();
switch(choice)
{
case '1':choice_1_input_new();break;/*输入新进的图书信息*/
case '2':choice_2_display_all();break;/*显示全部图书信息*/
case '3':choice_3_search_according_name();break;/*根据图书名称显示图书的信息*/
case '4':choice_4_delete_according_name();break;/*根据图书名称对图书信息进行删除*/
case '5':choice_5_sort_according_name();break;/*根据图书名称排序*/
case '6':choice_6_display_high_price();break;/*根据价格列出图书信息*/
case '7':choice_7_display_according_exitflag();break;/*根据存在状态列出图书信息*/
case '8':printf("\n\n\t\t\t谢谢使用,再见!\n\t\t\t按任意键退出!\n");getch();return;
default:
printf("\n\n\t\t\t请输入菜单中的数字!(1~8)");
tm=clock();
while(clock()<tm+1800);
break;
}
}
}
㈣ 高分悬赏急求一段源代码
#include<iostream>
#include<fstream>
#include<conio.h>
using namespace std;
class Librarian //图书管理员类
{
public:
Librarian();
Librarian(int n,int j,char na[20],int w );
int getnumber();
int getjobage();
char *getname();
int getwages();
void resetjobage(int j);
void resetwages(int w);
void resetname(char na[20]);
private:
int number;
int jobage;
char name[20];
int wages;
};
Librarian::Librarian() //其函数的实现
{
number=0;
char b[20]="no one";
jobage=0;
strcpy(name,b);
}
Librarian::Librarian(int n,int j,char na[20],int w)
{
number=n;
jobage=j;
strcpy(name,na);
wages=w;
}
int Librarian::getjobage()
{return jobage;}
char *Librarian::getname()
{return name;}
int Librarian::getnumber()
{return number;}
int Librarian::getwages()
{return wages;}
void Librarian::resetjobage(int j)
{
jobage=j;
}
void Librarian::resetname(char na[20])
{
strcpy(name,na);
}
void Librarian::resetwages(int w)
{
wages=w;
}
class reader //读者类
{
private:
int number;
int age;
char name[20];
char borrowbook[20];
public:
reader();
reader(int c,int a,char b[20],char e[20]);
int getnumber();
int getage();
char *getname();
char * getborrowbook();
void reworkborrowbook(char a[20]);
};
reader::reader() //其函数的实现
{
char a[20]="没有人";
char c[20]="没有借书";
number=0;
age=0;
}
reader::reader(int a,int c,char d[20],char e[20])
{
number=a;
age=c;
strcpy(name,d);
strcpy(borrowbook,e);
}
int reader::getnumber(){return number;}
int reader::getage(){return age;}
char *reader::getname(){return name;}
char * reader::getborrowbook(){return borrowbook;}
void reader::reworkborrowbook(char a[20]){strcpy(borrowbook,a);}
struct book //图书的结构体
{
int num;
char name[20];
char writer[20];
};
void outbookinf() //输出所有图书信息
{
int i;
ifstream infile("allbook.txt",ios::in);
char line[50];
cout<<"书名"<<'\t'<<"书号"<<'\t'<<"作者"<<endl;
for(i=1;i<=10;i++)
{
infile.getline(line,50,'\n');
cout<<line<<endl;
}
infile.close();
}
void serchLaninf() //图书管理员信息函数
{
int n,i;
ifstream file("serchLaninf.txt");
if(file) { file>>n; file.close();}
else {cout<<"没有图书管信息理员"; exit(0);}
ifstream is("controlloer.txt",ios_base::binary);
if(is)
{
Librarian *A=new Librarian[n];
for(i=0;i<n;i++)
{
is.read((char *)&A[i],sizeof(A[i]));
}
for(i=0;i<n;i++)
{
cout<<"编号"<<'\t'<<"工龄"<<'\t'<<"名字"<<'\t'<<"工资"<<endl;
cout<<A[i].getnumber()<<"\t"<<A[i].getjobage()<<"\t"<<A[i].getname()<<"\t"<<A[i].getwages()<<endl;
}
}
else
{
cout<<"txt文件打开出错'"<<endl;
}
is.close();
}
void libary() //图书馆的总信息
{
system("cls");
system("color 2e");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<"本校图书馆由本部图书馆及彭州校区图书馆组成，图书馆总面积达了****平方米";
cout<<" （本馆现在有***类书籍***万册，****类书籍****万册，****类书籍****万册****类书籍****万册），";
cout<<"图书馆现有工作人员***名";
cout<<"图书馆现有的现代化设备价值超过****万元………………"<<endl;
}
void storelibrarian() //存入新的管理员的信息
{
int age,n,num,wage;
char name[20];
ifstream file("serchLaninf.txt");
if(file) { file>>n; file.close();}
else { n=0;}
cout<<"已有的图书管理员个数：";
cout<<n<<endl;
cout<<"请输入新图书管理员的编号和工龄,名字和工资:";
cin>>num>>age>>name>>wage;
Librarian A(num,age,name,wage);
cout<<"编号 工龄 名字 工资 "<<endl;
cout<<A.getnumber()<<" "<<A.getjobage()<<" "<<A.getname()<<" "<<A.getwages()<<endl;
ofstream outfile("controlloer.txt",ios_base::app );
outfile.write((char *)&A,sizeof(A));
outfile.close();
n++;
ofstream tfile("serchLaninf.txt");
tfile<<n;
tfile.close();
cout<<"保存成功！";
}
void reLaninf() //修改图书管理员
{
int i,n,h,jobage,wage,j;
char name[20];
ifstream file("serchLaninf.txt");
if(file) { file>>n; file.close();}
else {cout<<"没有图书管信息理员";
exit(0);}
cout<<"已有的图书管理员个数：";
cout<<n<<endl;
Librarian *A=new Librarian[n];
ifstream is("controlloer.txt",ios_base::binary);
if(is)
{
for(i=0;i<n;i++)
{
is.read((char *)&A[i],sizeof(A[i]));
}
for(i=0;i<n;i++)
{
cout<<"编号 工龄 名字 工资"<<endl;
cout<<A[i].getnumber()<<" "<<A[i].getjobage()<<" "<<A[i].getname()<<" "<<A[i].getwages()<<endl;
}
}
else
{
cout<<"打开文件出错"<<endl;
}
is.close();
cout<<"请选择你要修改的管理员编号：";
cin>>h;
cout<<"输入新的工龄，名字，工资:";
cin>>jobage>>name>>wage;
A[h-1].resetjobage(jobage);
A[h-1].resetname(name);
A[h-1].resetwages(wage);
cout<<"该管理员修改后的名字是："<<A[h-1].getname()<<" 工龄是:"<<A[h-1].getjobage()<<" 工资是:"<<A[h-1].getwages()<<endl;
ofstream tfile("controlloer.txt",ios_base::binary);
for(j=0;j<n;j++)
{
tfile.write((char *)&A[j],sizeof(A[j]));
}
tfile.close();
}
void aadbook() //新增图书
{
int num;char name[12];char writer[10];int n;
a:
ofstream fout("allbook.txt",ios::app);
cout<<"请录入图书信息:"<<endl;
cout<<"书名"<<'\t'<<"书号"<<'\t'<<"作者"<<endl;
cin>>name;fout<<name<<'\t';
cin>>num;fout<<num<<'\t';
cin>>writer;fout<<writer<<'\n';
fout.close();
cout<<"是否继续录入?1.是2.否"<<endl;
cin>>n;
if(n==1)
goto a;
else
{void studentland();
studentland();}
}
void delate() //删除函数
{ int m;
cout<<"选择操作选项:"<<endl;
cout<<" 1.删除全部信息"<<endl;
cout<<" 2.单个删除"<<endl;
cin>>m;
if(m==1)
{ofstream file("allbook.txt",ios::trunc);
cout<<"全部删除完毕，按任意键返回!"<<endl;
file.close();
getch();
system("cls");
void studentland();
studentland();
}
char str[10][80],buf[20];
a:
int i=0,flag=100,c=0;
ifstream fin("allbook.txt");
if(!fin){
cout<<"文件打开失败!"<<endl;
getch();
system("cls");
void studentland();
studentland();
}
cout<<"请输入你要删除的书名："<<endl;
cin>>buf;
strcat(buf,"\t");
while(fin.getline(str[i],80))
{
if(strncmp(str[i],buf,strlen(buf))==0)
{
flag=i;
}
i++;
}
fin.close();
if(flag==100)
{
cout<<"没有你所要删除的书籍！重新按1，否则0....."<<endl;
int b;
cin>>b;
if(b==1)goto a;
else c=1;
}
if(c==0){
ofstream fout("allbook.txt");
for(int j=0;j<i;j++){
if(j==flag)continue;
fout<<str[j]<<endl;
}
fout.close();
cout<<"你要删除的书籍的信息已删除,继续按1，否则按0....."<<endl;
int b;
cin>>b;
if(b==1)goto a;
}
cout<<"操作已经结束，按任意键返回......"<<endl;
getch();
system("cls");
void studentland();
studentland();
}
void searchbook() // 查找书籍
{
a:
ifstream fin;
int flag=0,b,length;
char str[20];
char f[200];char g[200];
fin.open("allbook.txt");
if(!fin)
{
cout<<"Open f1.dat error....."<<endl;
exit(1);
}
while(1)
{
cout<<"请输入书名：";
cin>>str;
strcat(str,"\t");
length=strlen(str);
cout<<"------------------------------------"<<endl;
while(fin.getline(f,199))
{
strcpy(g,f);
if(strncmp(str,f,length)==0)
{
flag=1;
break;
}
}
if(flag==1)
{
cout<<"所查询的书已经找到："<<'\n';
cout<<"--------------------------------"<<endl;
cout<<"书名"<<'\t'<<"书号"<<'\t'<<"作者"<<'\t'<<endl;
cout<<g<<endl;
cout<<"--------------------------------"<<endl;
flag=0;
cout<<"要继续查询按1，否则按0："<<endl;
cin>>b;
if(b==0)break;
}
else
{
fin.close();
cout<<"没有此书,继续按1，否则按0..."<<endl;
cin>>b;
if(b==0)break;
goto a;
}
}
fin.close();
cout<<"查询完毕，按任意键返回......"<<endl;
getch();
system("cls");
void studentland();
studentland();
}
void seachreader() // 查询读者信息
{
a:
ifstream fin;
int flag=0,b,length;
char str[20];
char f[200];char g[200];
fin.open("readernum.txt");
if(!fin)
{
cout<<"没有此信息文件！"<<endl;
exit(1);
}
while(1)
{
cout<<"请输入你要查找读者的名字:";
cin>>str;
strcat(str,"\t");
length=strlen(str);
cout<<"------------------------------------"<<endl;
while(fin.getline(f,199))
{
strcpy(g,f);
if(strncmp(str,f,length)==0)
{
flag=1;
break;
}
}
if(flag==1)
{
cout<<"所查询的读者已经找到："<<'\n';
cout<<"--------------------------------"<<endl;
cout<<"名字"<<'\t'<<"编号"<<'\t'<<"年龄"<<'\t'<<"借书次数"<<endl;
cout<<g<<endl;
cout<<"--------------------------------"<<endl;
flag=0;
cout<<"要继续查询按1，否则按0："<<endl;
cin>>b;
if(b==0)break;
goto a;
}
else
{
fin.close();
cout<<"没有此人,继续按1，否则按0..."<<endl;
cin>>b;
if(b==0)break;
goto a;
}
}
fin.close();
cout<<"查询完毕，按任意键返回......"<<endl;
getch();
system("cls");
void studentland();
studentland();
}
/*void seachreader() //查询读者的信息
{
int i,b,h=0;
char a[20];
ifstream file("readernum.txt");
if(file) { file>>b; file.close();}
else { cout<<"没有文件";}
cout<<"已有的读者个数：";
cout<<b<<endl;
reader *A=new reader[b];
ifstream is("reader.txt",ios_base::binary);
if(is)
{
for(i=0;i<b;i++)
{
is.read((char *)&A[i],sizeof(A[i]));
}
}
else
{
cout<<"txt文件打开出错"<<endl;
}
is.close();
cout<<"请输入你要查找读者的名字：";
cin>>a;
for(i=0;i<b;i++)
{
if(strcmp(A[i].getname(),a)==0)
{
cout<<"编号 年龄 名字 借书情况 "<<endl;
cout<<A[i].getnumber()<<" "<<A[i].getage()<<" "<<A[i].getname()<<" "<<A[i].getborrowbook()<<endl;
h++;
}
}
if(h==0)cout<<"没有这个读者！";
}
*/
void Librarianland() //管理员登陆函数
{
int q,l=1,i,h;
system("cls");
system("color 2e");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<"现在进行身份确认，请输入口令：";
cin>>i;
while(l)
{
if(i==00000)
{
system("cls");
system("color 3e");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<"|*******" <<"0,返回上一级菜单."<<" ******|"<<endl;
cout<<" "<<"|*******" <<"1,查询图书馆管理员的信息"<<" ******|"<<endl;
cout<<" "<<"|*******" <<"2,存入新的管理员信息. "<<" ******|"<<endl;
cout<<" "<<"|*******" <<"3,修改图书管理员的信息"<<" ******|"<<endl;
cout<<" "<<"|*******" <<"4,新增图书"<<" ******|"<<endl;
cout<<" "<<"|*******" <<"5,删除图书"<<" ******|"<<endl;
cout<<"请选择执行的操作：";
cin>>q;
if(q>=0&&q<6)
{
switch(q)
{
case 0:
l=0;
break;
case 1:serchLaninf();
system("pause");
break;
case 2:storelibrarian();
system("pause");
case 3:reLaninf();
system("pause");
break;
case 4:
void aadbook();
aadbook();
break;
case 5:
void delate();
delate();
break;
default:
break;
}
}
else
{
system("cls");
system("color 4e");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<"操作无效！"<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
system("pause");
}
}
else
{
system("cls");
system("color 2e");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<" 身份确认失败"<<endl;
cout<<" "<<" 是否重新确认！"<<endl;
cout<<" "<<"重新确认请按请按1,放弃请按0"<<endl;
cout<<" ";
cin>>h;
if(h==0) l=0;
if(h==1)
{
system("cls");
system("color 2e");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<"请再次输入口令：";
cin>>i;
}
}
}
}
void studentland() //学生登陆函数
{
int h;
char l='y';
while(l=='y')
{
system("cls");
system("color 3e");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<"****** "<<"|输出藏书信息,请按1 | "<<"******"<<endl;
cout<<" "<<"****** "<<"|查询图书馆的总信息，请按2| "<<"******"<<endl;
cout<<" "<<"****** "<<"|按书名查找图书,请按3 | "<<"******"<<endl;
cout<<" "<<"****** "<<"|查询读者的信息,请按4 | "<<"******"<<endl;
cout<<" "<<" ****** "<<"|返回上一级菜单,请按0 | "<<"******"<<endl;
cout<<"请选择您将执行的操作:";
cin>>h;
if(h>=0&&h<5)
switch(h)
{
case 0:
l='n';
break;
case 1:outbookinf();
system("pause");
break;
case 2:libary();
system("pause");
break;
case 3:searchbook();
system("pause");
break;
case 4:seachreader();
system("pause");
break;
}
else
{
system("cls");
system("color 4e");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<"您的操作是无效的！！！！"<<endl;
system("pause");
}
}
}
void main() // 主函数
{
int h,l=1;
while(l)
{
system("cls");
system("color 7c");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<"图书管理系统"<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" ------------------"<<endl;
cout<<" "<<"||管理员登陆 请按1||"<<endl;
cout<<" "<<"||学生登陆 请按2 ||"<<endl;
cout<<" "<<"||退出系统 请按0 ||"<<endl;
cout<<" -------------------"<<endl;
cout<<""<<endl;
cout<<" 请您选择登陆方式：";
cin>>h;
if(h>=0&&h<3)
{
switch(h)
{
case 0:
cout<<"谢谢光临本图书馆！"<<endl;
exit(0);
case 1:
Librarianland();
system("pause");
break;
case 2:
studentland();
system("pause");
break;
}
}
else
{
system("cls");
system("color 4e");
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<endl;
cout<<" "<<"您的操作是无效的！！！！"<<endl;
system("pause");
}
}
}
图书馆的管理系统。
㈤ C++图书馆管理系统源代码
/*****************************************************************************************/
#include <iostream>
#include <iomanip>
#include <cstring>
#include <fstream>//输入/输出文件流类
using namespace std;
const int Maxr=100;//最多的读者
const int Maxb=100;//最多的图书
const int Maxbor=5;//每位读者最多借五本书
//读者类,实现对读者的信息的描述
class Reader
{
private:
int tag; //删除标记 1:已删 0:未删
int no; //读者编号
char name[10]; //读者姓名
int borbook[Maxbor];//所借图书
public:
Reader() {}
char *getname() {return name;} //获取姓名
int gettag() {return tag;} //获取删除标记
int getno() {return no;} //获取读者编号
void setname(char na[]) //设置姓名
{
strcpy(name,na);
}
void delbook(){ tag=1; }//设置删除标记 1:已删 0:未删
void addreader(int n,char *na)//增加读者
{
tag=0;
no=n;
strcpy(name,na);
for(int i=0;i<Maxbor;i++)
borbook[i]=0;
}
void borrowbook(int bookid)//借书操作
{
for(int i=0;i<Maxbor;i++)
{
if (borbook[i]==0)
{
borbook[i]=bookid;
return;
}
}
}
int retbook(int bookid)//还书操作
{
for(int i=0;i<Maxbor;i++)
{
if(borbook[i]==bookid)
{
borbook[i]=0;
return 1;
}
}
return 0;
}
void disp()//读出读者信息
{
cout << setw(5) << no <<setw(10) << name<<"借书编号：[";
for(int i=0;i<Maxbor;i++)
if(borbook[i]!=0)
cout << borbook[i] << "|";
cout << "]"<<endl;
}
};
//读者类库，实现建立读者的个人资料
class RDatabase
{
private:
int top; //读者记录指针
Reader read[Maxr];//读者记录
public:
RDatabase() //构造函数，将reader.txt读到read[]中
{
Reader s;
top=-1;
fstream file("reader.txt",ios::in);//打开一个输入文件
while (1)
{
file.read((char *)&s,sizeof(s));
if (!file)break;
top++;
read[top]=s;
}
file.close(); //关闭 reader.txt
}
void clear()//删除所有读者信息
{
top=-1;
}
int addreader(int n,char *na)//添加读者时先查找是否存在
{
Reader *p=query(n);
if (p==NULL)
{
top++;
read[top].addreader(n,na);
return 1;
}
return 0;
}
Reader *query(int readerid)//按编号查找
{
for (int i=0;i<=top;i++)
if (read[i].getno()==readerid &&
read[i].gettag()==0)
{
return &read[i];
}
return NULL;
}
void disp() //输出所有读者信息
{
for (int i=0;i<=top;i++)
read[i].disp();
}
void readerdata();//读者库维护
~RDatabase() //析构函数，将read[]写到reader.txt文件中
{
fstream file("reader.txt",ios::out);
for (int i=0;i<=top;i++)
if (read[i].gettag()==0)
file.write((char *)&read[i],sizeof(read[i]));
file.close();
}
};
void RDatabase::readerdata()
{
char choice;
char rname[20];
int readerid;
Reader *r;
while (choice!='0')
{
cout <<"\n\n\t\t\t读 者 维 护\n\n\n\t\t 1 新 增\n\n\t\t 2 更 改\n\n\t\t 3 删 除\n\n\t\t 4 查 找\n\n\t\t 5 显 示\n\n\t\t 6 全 删\n\n\t\t 0 退 出"<<endl;
cin >> choice;
switch (choice)
{
case '1':
cout << "输入读者编号:";
cin >> readerid;
cout << "输入读者姓名:";
cin >> rname;
addreader (readerid,rname);
break;
case '2':
cout << "输入读者编号:";
cin >> readerid;
r=query(readerid);
if (r==NULL)
{
cout << " 该读者不存在 "<<endl;
break;
}
cout << "输入新的姓名:";
cin >> rname;
r->setname(rname);
break;
case '3':
cout << " 输入读者编号:";
cin >> readerid;
r=query(readerid);
if (r==NULL)
{
cout <<" 该读者不存在" << endl;
break;
}
r->delbook();
break;
case '4':
cout << "读入读者编号:";
cin >> readerid;
r=query(readerid);
if (r==NULL)
{
cout <<"该读者不存在"<< endl;
break;
}
r->disp();
break;
case '5':
disp();
break;
case '6':
clear();
break;
default:cout<<"输入错误，请从新输入：";break;
}
}
}
//图书类，实现对图书的描述，图书的编号，书名，借出，还入等
class Book
{
private:
int tag;//删除标记 1:已删 0:未删
int no;//图书编号
char name[20];//书名
int onshelf;//是否再架 1:再架 2:已借
public:
Book(){}
char *getname() { return name; }//获取姓名
int getno(){ return no; }//获取图书编号
int gettag(){ return tag; }//获取删除标记
void setname(char na[])//设置书名
{
strcpy(name,na);
}
void delbook(){ tag=1;}//删除图书
void addbook(int n,char *na)//增加图书
{
tag=0;
no=n;
strcpy(name,na);
onshelf=1;
}
int borrowbook()//借书操作
{
if (onshelf==1)
{
onshelf=0;
return 1;
}
return 0;
}
void retbook()//还书操作
{
onshelf=1;
}
void disp()//输出图书
{
cout << setw(6) << no << setw(18) << name << setw(10)
<<(onshelf==1? "在架":"已借") <<endl;
}
};
//图书库类，实现对图书的维护，查找，删除等
class BDatabase
{
private:
int top; //图书记录指针
Book book[Maxb]; //图书记录
public:
BDatabase()//构造函数，将book.txt读到book[]中
{
Book b;
top=-1;
fstream file("book.txt",ios::in);
while (1)
{
file.read((char *)&b,sizeof(b));
if (!file) break;
top++;
book[top]=b;
}
file.close();
}
void clear()//全删
{
top=-1;
}
int addbook(int n,char *na)//增加图书
{
Book *p=query(n);
if (NULL==p)
{
top++;
book[top].addbook(n,na);
return 1;
}
return 0;
}
Book *query(int bookid)//查找图书
{
for (int i=0;i<=top;i++)
if (book[i].getno()==bookid &&book[i].gettag()==0)
{
return &book[i];
}
return NULL;
}
void bookdata();//图书库维护
void disp()
{
for (int i=0;i<=top;i++)
if (book[i].gettag()==0)
book[i].disp();
}
~BDatabase()//析构函数，将book[]写到book.txt文件中
{
fstream file("book.txt",ios::out);
for (int i=0;i<=top;i++)
if (book[i].gettag()==0)
file.write((char *)&book[i],sizeof(book[i]));
file.close();
}
};
void BDatabase::bookdata()
{
char choice;
char bname[40];
int bookid;
Book *b;
while (choice!='0')
{
cout <<"\n\n\n\t\t\t图 书 维 护 "<<endl<<endl;
cout<<"\t\t1 新 增\n \t\t2 更 改\n\t\t3 删 除\n\t\t4 查 找\n\t\t5 显 示\n\t\t6 全 删\n\t\t0 退 出"<<endl;
cin >> choice;
switch (choice)
{
case '1':
cout << "输入图书编号:"<<endl;
cin >> bookid;
cout << "输入图书书名:"<<endl;
cin >> bname;
addbook(bookid,bname);
break;
case '2':
cout << "输入图书编号:"<<endl;
cin >> bookid;
b=query(bookid);
if (b==NULL)
{
cout << " 该图书不存在 "<<endl;
break;
}
cout << "输入新的书名:"<<endl;
cin >> bname;
b->setname(bname);
break;
case '3':
cout <<" 读入图书编号:"<<endl;
cin >> bookid;
b=query(bookid);
if (b==NULL)
{
cout <<" 该图书不存在" << endl;
break;
}
b->delbook();
break;
case '4':
cout << " 读入图书编号:"<<endl;
cin >> bookid;
b=query(bookid);
if (b==NULL)
{
cout <<" 该图书不存在"<< endl;
break;
}
b->disp();
break;
case '5':
disp();
break;
case '6':
clear();
break;
default:cout<<"输入错误，请从新输入:";
}
}
}
//main() 函数的实现，程序的主界面的引导
int main(void)
{
char choice;
int bookid,readerid;
RDatabase ReaderDB;
Reader *r;
BDatabase BookDB;
Book *b;
while(choice!='0')
{
cout <<endl<<endl<<"\t\t\t 图 书 管 理 系 统\n\n\n";
cout <<"\t\t\t1 借 书\n\n\t\t\t2 还 书 \n\n\t\t\t3 图 书 维 护\n\n\t\t\t4 读 者 维 护\n\n\t\t\t0 离 开"<<endl;
cin >> choice;
switch (choice)
{
case '1':
cout <<" 借书 读者编号:";
cin >>readerid;
cout <<" 图书编号： ";
cin >>bookid;
r=ReaderDB.query(readerid);//按编号查找
if (NULL==r)
{
cout <<" 不存在该读者，不能借书"<< endl;
break;
}
b=BookDB.query(bookid);
if (b==NULL)
{
cout <<" 不存在该图书，不能借书"<< endl;
break;
}
if (b->borrowbook()==0)
{
cout << " 该图书已借出，不能借书"<< endl;
break;
}
r->borrowbook(b->getno());
break;
case '2':
cout<<"还书\n 读者编号:";
cin >>readerid;
cout << " 图书编号:";
cin >>bookid;
r=ReaderDB.query(readerid);
if (r==NULL)
{
cout <<" 不存在该读者，不能还书" << endl;
break;
}
b=BookDB.query(bookid);
if (b==NULL)
{
cout <<" 不存在该图书，不能还书" <<endl;
break;
}
b->retbook();
r->retbook(b->getno());
break;
case '3':
BookDB.bookdata();
break;
case '4':
ReaderDB.readerdata();
break;
default:cout<<"输入错误，请从新输入：";
}
}
return 0;
}