}
};
classRData
{
private:
inttop;//读者记录指针
Studentread[Reader];
public:
RData()//构造函数,将Student.txt读到read[]中
{
Students;
top=-1;
fstreamfile("Student.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();
}
voidclear()
{
top=-1;
}
intaddStudent(intn,char*na)//查找是否存在
{
Student*p=equal(n);
if(p==NULL)
{
top++;
read[top].addStudent(n,na);
return1;
}
return0;
}
Student*equal(intStudentid)//按编号查找
{
for(inti=0;i<=top;i++)
if(read[i].getnumber()==Studentid&&
read[i].gettag()==0)
{
return&read[i];
}
returnNULL;
}
voidoutput()
{
for(inti=0;i<=top;i++)
read[i].output();
}
voidStudentdata();//读者库维护
~RData()//析构函数,将read[]写到Student.txt文件中
{
fstreamfile("Student.txt",ios:
:
out);
for(inti=0;i<=top;i++)
if(read[i].gettag()==0)
file.write((char*)&read[i],sizeof(read[i]));
file.close();
}
};
voidRData:
:
Studentdata()
{
charchoice;
charrname[20];
intStudentid;
Student*r;
while(choice!
='0')
{
cout<<"┏━━━━━━━━━━━━━┓\n";
cout<<"┃读者维护┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃1.新增┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃2.更改┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃3.删除┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃4.查找┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃5.显示┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃6.全删┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃0.退出┃\n";
cout<<"┗━━━━━━━━━━━━━┛\n";
//cout<<
cin>>choice;
switch(choice)
{
case'1':
cout<<"输入读者编号:
";
cin>>Studentid;
cout<<"输入读者姓名:
";
cin>>rname;
addStudent(Studentid,rname);
break;
case'2':
cout<<"输入读者编号:
";
cin>>Studentid;
r=equal(Studentid);
if(r==NULL)
{
cout<<"该读者不存在"<break;
}
cout<<"输入新的姓名:
";
cin>>rname;
r->setname(rname);
break;
case'3':
cout<<"输入读者编号:
";
cin>>Studentid;
r=equal(Studentid);
if(r==NULL)
{
cout<<"该读者不存在"<break;
}
r->delbook();
break;
case'4':
cout<<"读入读者编号:
";
cin>>Studentid;
r=equal(Studentid);
if(r==NULL)
{
cout<<"该读者不存在"<break;
}
r->output();
break;
case'5':
output();
break;
case'6':
clear();
break;
default:
cout<<"退出:
\n";system("cls");break;
}
}
}
classBook
{
private:
inttag;
intnumber;
charname[20];
intonshelf;
public:
Book(){}
char*getname()
{
returnname;
}
intgetnumber()
{
returnnumber;
}
intgettag()
{
returntag;
}
voidsetname(charna[])
{
strcpy(name,na);
}
voiddelbook()
{
tag=1;
}
voidaddbook(intn,char*na)
{
tag=0;
number=n;
strcpy(name,na);
onshelf=1;
}
intborrowbook()//借书操作
{
if(onshelf==1)
{
onshelf=0;
return1;
}
return0;
}
voidretbook()//还书操作
{
onshelf=1;
}
voidoutput()//输出图书
{
cout<<<(onshelf==1?
"在架":
"已借")<}
};
classBDatabase
{
private:
inttop;
Bookbook[Maxb];//图书记录
public:
BDatabase()//构造函数,将book.txt读到book[]中
{
Bookb;
top=-1;
fstreamfile("book.txt",ios:
:
in);
while
(1)
{
file.read((char*)&b,sizeof(b));
if(!
file)break;
top++;
book[top]=b;
}
file.close();
}
voidclear()
{
top=-1;
}
intaddbook(intn,char*na)
{
Book*p=equal(n);
if(NULL==p)
{
top++;
book[top].addbook(n,na);
return1;
}
return0;
}
Book*equal(intbookid)
{
for(inti=0;i<=top;i++)
if(book[i].getnumber()==bookid&&book[i].gettag()==0)
{
return&book[i];
}
returnNULL;
}
voidbookdata();
voidoutput()
{
for(inti=0;i<=top;i++)
if(book[i].gettag()==0)
book[i].output();
}
~BDatabase()//析构函数,将book[]写到book.txt文件中
{
fstreamfile("book.txt",ios:
:
out);
for(inti=0;i<=top;i++)
if(book[i].gettag()==0)
file.write((char*)&book[i],sizeof(book[i]));
file.close();
}
};
voidBDatabase:
:
bookdata()
{
charchoice;
charbname[40];
intbookid;
Book*b;
while(choice!
='0')
{
cout<<"┏━━━━━━━━━━━━━┓\n";
cout<<"┃图书维护┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃1.新增┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃2.更改┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃3.删除┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃4.查找┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃5.显示┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃6.全删┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃0.退出┃\n";
cout<<"┗━━━━━━━━━━━━━┛\n";
cin>>choice;
switch(choice)
{
case'1':
cout<<"输入图书编号:
"<cin>>bookid;
cout<<"输入图书书名:
"<cin>>bname;
addbook(bookid,bname);
break;
case'2':
cout<<"输入图书编号:
"<cin>>bookid;
b=equal(bookid);
if(b==NULL)
{
cout<<"该图书不存在"<break;
}
cout<<"输入新的书名:
"<cin>>bname;
b->setname(bname);
break;
case'3':
cout<<"读入图书编号:
"<cin>>bookid;
b=equal(bookid);
if(b==NULL)
{
cout<<"该图书不存在"<break;
}
b->delbook();
break;
case'4':
cout<<"读入图书编号:
"<cin>>bookid;
b=equal(bookid);
if(b==NULL)
{
cout<<"该图书不存在"<break;
}
b->output();
break;
case'5':
output();
break;
case'6':
clear();
break;
default:
cout<<"退出\n";system("cls");break;
}
}
}
voidmain()
{
charchoice;
intbookid,Studentid;
RDataStudentDB;
Student*r;
BDatabaseBookDB;
Book*b;
while(choice!
='0')
{
cout<<"┏━━━━━━━━━━━━━┓\n";
cout<<"┃图书管理系统┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃1.借书┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃2.还书┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃3.图书维护┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃4.读者维护┃\n";
cout<<"┃━━━━━━━━━━━━━┃\n";
cout<<"┃0.退出┃\n";
cout<<"┗━━━━━━━━━━━━━┛\n";
cin>>choice;
switch(choice)
{
case'1':
system("cls");
cout<<"借书读者编号:
";
cin>>Studentid;
cout<<"图书编号:
";
cin>>bookid;
r=StudentDB.equal(Studentid);//按编号查找
if(NULL==r)
{
cout<<"不存在该读者,不能借书"<break;
}
b=BookDB.equal(bookid);
if(b==NULL)
{
cout<<"不存在该图书,不能借书"<break;
}
if(b->borrowbook()==0)
{
cout<<"该图书已借出,不能借书"<break;
}
r->borrowbook(b->getnumber());system("cls");
break;
case'2':
system("cls");
cout<<"还书\n读者编号:
";
cin>>Studentid;
cout<<"图书编号:
";
cin>>bookid;
r=StudentDB.equal(Studentid);
if(r==NULL)
{
cout<<"不存在该读者,不能还书"<break;
}
b=BookDB.equal(bookid);
if(b==NULL)
{
cout<<"不存在该图书,不能还书"<break;
}
b->retbook();
r->retbook(b->getnumber());
break;
case'3':
system("cls");
BookDB.bookdata();
break;
case'4':
system("cls");
StudentDB.Studentdata();
break;
default:
cout<<"退出\n";
}
}
}