Question

write a program in C++ for the development of the library management system. The C++ program will allow the system administrator to add staff, students, delete the user's accounts, modify user details, add and modify book details. The administrator will have total control over the user account. The system will capture the student details such as registration number, phone number class code, and passwords, amongst other essential information. The librarian will search the books through the database using the ISBN, title, or the author's name. They will have the capacity to know whether the book has been issued, date due, or whether the book is in the Library. In case a book is lost, the student has to report to the librarian to enable the Library to make the necessary changes and take suitable measures, including fines

Answer 1

#include<fstream.h>
#include<conio.h>
#include<stdio.h>
#include<process.h>
#include<string.h>
#include<iomanip.h>
class book
{
   char bno[6];
   char bname[50];
   char aname[20];
public:
   void create_book()
   {
cout<<"\nNEW BOOK ENTRY...\n";
cout<<"\nEnter The book no.";
cin>>bno;
cout<<"\n\nEnter The Name of The Book ";
gets(bname);
cout<<"\n\nEnter The Author's Name ";
gets(aname);
cout<<"\n\n\nBook Created..";
}

void show_book()
{
cout<<"\nBook no. : "<<bno;
cout<<"\nBook Name : ";
puts(bname);
cout<<"Author Name : ";
puts(aname);
}

void modify_book()
{
cout<<"\nBook no. : "<<bno;
cout<<"\nModify Book Name : ";
gets(bname);
cout<<"\nModify Author's Name of Book : ";
gets(aname);
}

char* retbno()
{
return bno;
}

void report()
{cout<<bno<<setw(30)<<bname<<setw(30)<<aname<<endl;}

};
class student
{
char admno[6];
char name[20];
char stbno[6];
int token;
public:
void create_student()
{
clrscr();
cout<<"\nNEW STUDENT ENTRY...\n";
cout<<"\nEnter The admission no. ";
cin>>admno;
cout<<"\n\nEnter The Name of The Student ";
gets(name);
token=0;
stbno[0]='/0';
cout<<"\n\nStudent Record Created..";
}

void show_student()
{
cout<<"\nAdmission no. : "<<admno;
cout<<"\nStudent Name : ";
puts(name);
cout<<"\nNo of Book issued : "<<token;
if(token==1)
cout<<"\nBook No "<<stbno;
}

void modify_student()
{
cout<<"\nAdmission no. : "<<admno;
cout<<"\nModify Student Name : ";
gets(name);
}

char* retadmno()
{
return admno;
}

char* retstbno()
{
return stbno;
}

int rettoken()
{
return token;
}

void addtoken()
{token=1;}

void resettoken()
{token=0;}

void getstbno(char t[])
{
strcpy(stbno,t);
}

void report()
{cout<<"\t"<<admno<<setw(20)<<name<<setw(10)<<token<<endl;}

};
fstream fp,fp1;
book bk;
student st;
void write_book()
{
char ch;
fp.open("book.dat",ios::out|ios::app);
do
{
clrscr();
bk.create_book();
fp.write((char*)&bk,sizeof(book));
cout<<"\n\nDo you want to add more record..(y/n?)";
cin>>ch;
}while(ch=='y'||ch=='Y');
fp.close();
}

void write_student()
{
char ch;
fp.open("student.dat",ios::out|ios::app);
do
{
st.create_student();
fp.write((char*)&st,sizeof(student));
cout<<"\n\ndo you want to add more record..(y/n?)";
cin>>ch;
}while(ch=='y'||ch=='Y');
fp.close();
}

void display_spb(char n[])
{
cout<<"\nBOOK DETAILS\n";
int flag=0;
fp.open("book.dat",ios::in);
while(fp.read((char*)&bk,sizeof(book)))
{
if(strcmpi(bk.retbno(),n)==0)
{
bk.show_book();
flag=1;
}
}
  
fp.close();
if(flag==0)
cout<<"\n\nBook does not exist";
getch();
}

void display_sps(char n[])
{
cout<<"\nSTUDENT DETAILS\n";
int flag=0;
fp.open("student.dat",ios::in);
while(fp.read((char*)&st,sizeof(student)))
{
if((strcmpi(st.retadmno(),n)==0))
{
st.show_student();
flag=1;
}
}
  
fp.close();
if(flag==0)
cout<<"\n\nStudent does not exist";
getch();
}
void modify_book()
{
char n[6];
int found=0;
clrscr();
cout<<"\n\n\tMODIFY BOOK REOCORD.... ";
cout<<"\n\n\tEnter The book no. of The book";
cin>>n;
fp.open("book.dat",ios::in|ios::out);
while(fp.read((char*)&bk,sizeof(book)) && found==0)
{
if(strcmpi(bk.retbno(),n)==0)
{
bk.show_book();
cout<<"\nEnter The New Details of book"<<endl;
bk.modify_book();
int pos=-1*sizeof(bk);
fp.seekp(pos,ios::cur);
fp.write((char*)&bk,sizeof(book));
cout<<"\n\n\t Record Updated";
found=1;
}
}

fp.close();
if(found==0)
cout<<"\n\n Record Not Found ";
getch();
}

void modify_student()
{
char n[6];
int found=0;
clrscr();
cout<<"\n\n\tMODIFY STUDENT RECORD... ";
cout<<"\n\n\tEnter The admission no. of The student";
cin>>n;
fp.open("student.dat",ios::in|ios::out);
while(fp.read((char*)&st,sizeof(student)) && found==0)
{
if(strcmpi(st.retadmno(),n)==0)
{
st.show_student();
cout<<"\nEnter The New Details of student"<<endl;
st.modify_student();
int pos=-1*sizeof(st);
fp.seekp(pos,ios::cur);
fp.write((char*)&st,sizeof(student));
cout<<"\n\n\t Record Updated";
found=1;
}
}
  
fp.close();
if(found==0)
cout<<"\n\n Record Not Found ";
getch();
}
void delete_student()
{
char n[6];
int flag=0;
clrscr();
cout<<"\n\n\n\tDELETE STUDENT...";
cout<<"\n\nEnter The admission no. of the Student You Want To Delete : ";
cin>>n;
fp.open("student.dat",ios::in|ios::out);
fstream fp2;
fp2.open("Temp.dat",ios::out);
fp.seekg(0,ios::beg);
while(fp.read((char*)&st,sizeof(student)))
{
if(strcmpi(st.retadmno(),n)!=0)
fp2.write((char*)&st,sizeof(student));
else
flag=1;
}
  
fp2.close();
fp.close();
remove("student.dat");
rename("Temp.dat","student.dat");
if(flag==1)
cout<<"\n\n\tRecord Deleted ..";
else
cout<<"\n\nRecord not found";
getch();
}

void delete_book()
{
char n[6];
clrscr();
cout<<"\n\n\n\tDELETE BOOK ...";
cout<<"\n\nEnter The Book no. of the Book You Want To Delete : ";
cin>>n;
fp.open("book.dat",ios::in|ios::out);
fstream fp2;
fp2.open("Temp.dat",ios::out);
fp.seekg(0,ios::beg);
while(fp.read((char*)&bk,sizeof(book)))
{
if(strcmpi(bk.retbno(),n)!=0)
{
fp2.write((char*)&bk,sizeof(book));
}
}
  
fp2.close();
fp.close();
remove("book.dat");
rename("Temp.dat","book.dat");
cout<<"\n\n\tRecord Deleted ..";
getch();
}
void display_alls()
{
clrscr();
fp.open("student.dat",ios::in);
if(!fp)
{
cout<<"ERROR!!! FILE COULD NOT BE OPEN ";
getch();
return;
}

cout<<"\n\n\t\tSTUDENT LIST\n\n";
cout<<"==================================================================\n";
cout<<"\tAdmission No."<<setw(10)<<"Name"<<setw(20)<<"Book Issued\n";
cout<<"==================================================================\n";

while(fp.read((char*)&st,sizeof(student)))
{
st.report();
}

fp.close();
getch();
}
void display_allb()
{
clrscr();
fp.open("book.dat",ios::in);
if(!fp)
{
cout<<"ERROR!!! FILE COULD NOT BE OPEN ";
getch();
return;
}

cout<<"\n\n\t\tBook LIST\n\n";
cout<<"=========================================================================\n";
cout<<"Book Number"<<setw(20)<<"Book Name"<<setw(25)<<"Author\n";
cout<<"=========================================================================\n";

while(fp.read((char*)&bk,sizeof(book)))
{
bk.report();
}
fp.close();
getch();
}
void book_issue()
{
char sn[6],bn[6];
int found=0,flag=0;
clrscr();
cout<<"\n\nBOOK ISSUE ...";
cout<<"\n\n\tEnter The student's admission no.";
cin>>sn;
fp.open("student.dat",ios::in|ios::out);
fp1.open("book.dat",ios::in|ios::out);
while(fp.read((char*)&st,sizeof(student)) && found==0)
{
if(strcmpi(st.retadmno(),sn)==0)
{
found=1;
if(st.rettoken()==0)
{
cout<<"\n\n\tEnter the book no. ";
cin>>bn;
while(fp1.read((char*)&bk,sizeof(book))&& flag==0)
{
if(strcmpi(bk.retbno(),bn)==0)
{
bk.show_book();
flag=1;
st.addtoken();
st.getstbno(bk.retbno());
int pos=-1*sizeof(st);
fp.seekp(pos,ios::cur);
fp.write((char*)&st,sizeof(student));
cout<<"\n\n\t Book issued successfully\n\nPlease Note: Write current date
in backside of book and submit within 15 days fine Rs. 1 for each day   
after 15 days period";
}
}
if(flag==0)
cout<<"Book no does not exist";
}
else
cout<<"You have not returned the last book ";

}
}
if(found==0)
cout<<"Student record not exist...";
getch();
fp.close();
fp1.close();
}
void book_deposit()
{
char sn[6],bn[6];
int found=0,flag=0,day,fine;
clrscr();
cout<<"\n\nBOOK DEPOSIT ...";
cout<<"\n\n\tEnter The student’s admission no.";
cin>>sn;
fp.open("student.dat",ios::in|ios::out);
fp1.open("book.dat",ios::in|ios::out);
while(fp.read((char*)&st,sizeof(student)) && found==0)
{
if(strcmpi(st.retadmno(),sn)==0)
{
found=1;
if(st.rettoken()==1)
{
while(fp1.read((char*)&bk,sizeof(book))&& flag==0)
{
if(strcmpi(bk.retbno(),st.retstbno())==0)
{
bk.show_book();
flag=1;
cout<<"\n\nBook deposited in no. of days";
cin>>day;
if(day>15)
{
fine=(day-15)*1;
cout<<"\n\nFine has to deposited Rs. "<<fine;
}
st.resettoken();
int pos=-1*sizeof(st);
fp.seekp(pos,ios::cur);
fp.write((char*)&st,sizeof(student));
cout<<"\n\n\t Book deposited successfully";
}
}
if(flag==0)
cout<<"Book no does not exist";
}
else
cout<<"No book is issued..please check!!";
}
}
if(found==0)
cout<<"Student record not exist...";
getch();
fp.close();
fp1.close();
}

void intro()
{
clrscr();
gotoxy(35,11);
cout<<"LIBRARY";
gotoxy(35,14);
cout<<"MANAGEMENT";
gotoxy(35,17);
cout<<"SYSTEM";
cout<<"\n\nMADE BY : YOUR NAME";
cout<<"\n\nSCHOOL : SCHOOL NAME";
getch();
}
void admin_menu()
{
clrscr();
int ch2;
cout<<"\n\n\n\tADMINISTRATOR MENU";
cout<<"\n\n\t1.CREATE STUDENT RECORD";
cout<<"\n\n\t2.DISPLAY ALL STUDENTS RECORD";
cout<<"\n\n\t3.DISPLAY SPECIFIC STUDENT RECORD ";
cout<<"\n\n\t4.MODIFY STUDENT RECORD";
cout<<"\n\n\t5.DELETE STUDENT RECORD";
cout<<"\n\n\t6.CREATE BOOK ";
cout<<"\n\n\t7.DISPLAY ALL BOOKS ";
cout<<"\n\n\t8.DISPLAY SPECIFIC BOOK ";
cout<<"\n\n\t9.MODIFY BOOK ";
cout<<"\n\n\t10.DELETE BOOK ";
cout<<"\n\n\t11.BACK TO MAIN MENU";
cout<<"\n\n\tPlease Enter Your Choice (1-11) ";
cin>>ch2;
switch(ch2)
{
case 1: clrscr();
write_student();break;
case 2: display_alls();break;
case 3:
char num[6];
clrscr();
cout<<"\n\n\tPlease Enter The Admission No. ";
cin>>num;
display_sps(num);
break;
case 4: modify_student();break;
case 5: delete_student();break;
case 6: clrscr();
write_book();break;
case 7: display_allb();break;
case 8: {
char num[6];
clrscr();
cout<<"\n\n\tPlease Enter The book No. ";
cin>>num;
display_spb(num);
break;
}
case 9: modify_book();break;
case 10: delete_book();break;
case 11: return;
default:cout<<"\a";
}
admin_menu();
}

void main()
{
char ch;
intro();
do
{
clrscr();
cout<<"\n\n\n\tMAIN MENU";
cout<<"\n\n\t01. BOOK ISSUE";
cout<<"\n\n\t02. BOOK DEPOSIT";
cout<<"\n\n\t03. ADMINISTRATOR MENU";
cout<<"\n\n\t04. EXIT";
cout<<"\n\n\tPlease Select Your Option (1-4) ";
ch=getche();
switch(ch)
{
case '1':clrscr();
book_issue();
break;
case '2':book_deposit();
break;
case '3':admin_menu();
break;
case '4':exit(0);
default :cout<<"\a";
}
}while(ch!='4');
}

Answer 2

Create a class called Book with member variables title, author, subject and ISBN number.  Create n number objects of type Book and WAP to read/write class objects from/to file “Book.dat”.