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maddy05 24Jan2009 21:04

help in lib management project
 
the issue function is not working well instead of modifying the book record it is adding another book with a issue value 2
can any one correct it
Code:

// **library management** //
// **library members can add,delete,modify and search book** //
// **library members can operate users account** //
// **user can manage his record,issue and return a book** //
// **user can take only 1 book at a time** //



#include<fstream.h>
#include<iostream.h>
#include<conio.h>
#include<string.h>
#include<stdio.h>
#include<process.h>
#include<math.h>
#include<dos.h>
#include<graphics.h>
#include<iomanip.h>
#include<stdlib.h>




void mainmenu(void);
 



struct libdate  // *defining date* //
{
int day;
int month;
int year;
};



struct address // *defining address* //
{
int hno ;
char area[100];
char city[100];
long int pincode;
};


class book    // *defining class book* //
{
int bcode;
char bname[100];
char author[100];
char category[100];
int issue;
libdate doe;                // *structure as class member* //

public :

void modify(void);

int getissue()
{
return issue;
}

void cissuey(void)
{
issue=1;
}

void cissuen(void)
{
issue=2;
}

void getdata(void)//*inputing data* //
{
 int gdriver = EGA, gmode = EGAHI;
  int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=6;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
cout<<"ENTER NAME:"<<endl;
gets(bname);
cout<<"ENTER CODE :"<<endl;
cin>>bcode;
cout<<"AUTHOR NAME :"<<endl;
gets(author);
cout<<"CATEGORY :"<<endl;
gets(category);
cout<<"DATE OF ENTRY "<<endl;
{
cout<<"DAY:"<<endl;
cin>>doe.day;
cout<<"MONTH :"<<endl;
cin>>doe.month;
cout<<"YEAR :"<<endl;
cin>>doe.year;
}
cout<<"the current status of the book is unissued by default so enter 1"<<endl;
cin>>issue;
}
void putdata(void)
{
 int gdriver = EGA, gmode = EGAHI;
  int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=6;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
cout<<" "<<bname<<" has the code "<<bcode<<endl;
cout<<" written by "<<author<<endl;
cout<<" is currently in the category "<<category<<endl;
cout<<" is entered in library on "<<doe.day<<"."<<doe.month<<"."<<doe.year<<endl;
cout<<" the current status of the book is "<<issue<<endl;
getch();
}

char*getauthname()
{
return author;
}

int getbcode(void)
{
return bcode;
}

};

book b1,b2;


void book::modify(void)            //*to modify a book record*//
{
int gdriver = EGA, gmode = EGAHI;
int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=2;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
cout<<" "<<bname<<" has the code "<<bcode<<endl;
cout<<"  written by "<<author<<endl;
cout<<"  is currently in the category "<<category<<endl;
cout<<"  is entered in library on "<<doe.day<<"."<<doe.month<<"."<<doe.year<<endl;
cout<<"  the current status of the book is "<<issue<<endl;

cout<<"enter new details"<<endl;
int mbc;
char an[100],cat[100],nm[100];
date dot;
cout<<"enter new details"<<endl;
cout<<"enter the new book code:(enter 1 to retain old one)"<<endl;
cin>>mbc;
cout<<"enter the new name:(press '.' to retain old one)"<<endl;
gets(nm);
cout<<"enter the new author:(press '.' to retain old one)"<<endl;
gets(an);
cout<<"enter the new category:(press '.' to retain old one)"<<endl;
gets(cat);
if(strcmp(nm,".")!=0)
strcpy(bname,nm);
if(strcmp(an,".")!=0)
strcpy(author,an);
if(strcmp(cat,".")!=0)
strcpy(category,cat);
if(mbc!=1)
bcode=mbc;
}


int searchbook(void)  //*to search a book*//
{
int gdriver = EGA, gmode = EGAHI;
int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=5;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
ifstream finbook;
finbook.open("lib.dat",ios::in|ios::binary);
finbook.seekg(0,ios::beg);
int n,m,choice;
char found='n';
char*mc;
cout<<"for searching through book code press 1 or by author name press 2"<<endl;
cin>>choice;
switch(choice)
{
case 1:
{
cout<<"enter the book code to be searched"<<endl;
cin>>m;
while(!finbook.eof())
{
finbook.read((char*) &b1,sizeof(b1));
if(b1.getbcode()==m)
{
b1.putdata();
getch();
found='y';
return b1.getbcode();
finbook.close();
mainmenu();
}
}
if(found=='n')
cout<<"above book is not present in library!!"<<endl;
getch();
finbook.close();
return 0;
mainmenu();
}
case 2:
{
cout<<"enter the author's name for searching book"<<endl;
gets(mc);
while(!finbook.eof())
{
finbook.read((char*)&b1,sizeof(b1));
if(strcmpi(mc,b1.getauthname())==0)
{
b1.putdata();
getch();
found='y';
return b1.getbcode();
finbook.close();
mainmenu();
break;
}
}
if(found=='n')
cout<<"above book is not present in library!!"<<endl;
getch();
finbook.close();
mainmenu();
return 0;
}
}
}


void addbook(void)  //* add a book* //
{
int gdriver = EGA, gmode = EGAHI;
int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=10;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
ofstream foutbook("lib.dat",ios::app|ios::binary);
{
char ans='y';
while(ans=='y')
{
b1.getdata();
foutbook.write((char*) &b1,sizeof(b1));
cout<<"record added to library.\n"<<endl;
cout<<"do you want to enter more records?(y/n).."<<endl;
cin>>ans;
}
}

foutbook.close();
mainmenu();
}


void deletebook(void)  //*to delete an existing book* //
{
int gdriver = EGA, gmode = EGAHI;
int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=12;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
ifstream finbook;
ofstream foutbook;
finbook.open("lib.dat",ios::in);
foutbook.open("temp.dat",ios::out);
int bcode;
char found='f',confirm='n';
cout<<"enter the book code of the book which has to be deleted from library"<<endl;
cin>>bcode;
while(!finbook.eof())
{
finbook.read((char*) &b1,sizeof(b1));
if(b1.getbcode()==bcode)
{
b1.putdata();
found='t';
cout<<"want to delete,sure?(y/n).."<<endl;
cin>>confirm;
if(confirm=='n')
foutbook.write((char*) &b1,sizeof(b1));
}
else
foutbook.write((char*) &b1,sizeof(b1));
}
{
if(found=='f')
cout<<"record not found!!\n";
getch();
}
getch();
finbook.close();
foutbook.close();
remove("lib.dat");
rename("temp.dat","lib.dat"); //* old file is removed and temp is renamed *//
finbook.open("lib.dat",ios::in);
cout<<"record updated"<<endl;
cout<<"now the file contains"<<endl;
getch();
while(!finbook.eof())
{
finbook.read((char*)&b2,sizeof(b2));
if(finbook.eof())
break;
b2.putdata();
getch();

}
finbook.close();
mainmenu();
}


void modifybook(void) //* to modify a book record in library* //
{
int bcd;
long pos;
char found='f';
cout<<"enter the code of the book which has to be modified"<<endl;
cin>>bcd;
fstream fio("lib.dat",ios::in|ios::out|ios::binary);
fio.seekg(0,ios::beg);
while(!fio.eof())
{
pos=fio.tellg();
fio.read((char*)&b1,sizeof(b1));
if(b1.getbcode()==bcd)
{
b1.modify();
fio.seekg(pos); //*file pointer positioned to beginning position of record being modified,before writing back modified record*//
fio.write((char*)&b1,sizeof(b1));
found='t';
break;
}
}
if(found=='f')
cout<<"record not found!!"<<endl;
fio.seekg(0);
cout<<"now the file contains"<<endl;
while(!fio.eof())
{
fio.read((char*) &b2,sizeof(b2));
b2.putdata();
getch();
mainmenu();
}
}


void dispallbook(void)
{
ifstream finbook;
finbook.open("lib.dat",ios::in|ios::binary);
finbook.seekg(0,ios::beg);
cout<<"file contains"<<endl;
while(!finbook.eof())
{
finbook.read((char*)&b2,sizeof(b2));
if(finbook.eof())
{
break;
}
else
b2.putdata();
getch();
}
finbook.close();
mainmenu();
}


class account
{
int id;
char name[100];
int status;
address haddress;

public:
libdate doi,doer;

int bid;

libdate dor;

int getid(void)
{
return id;
}

int getstatus(void)
{
return status;
}

void cstatusy(void)
{
status=1;
}

void cstatusn(void)
{
status=2;
}


void enterdata(void)    //*entering the data of user*//
{
cout<<"enter the name of the user"<<endl;
gets(name);
cout<<"enter the library ID"<<endl;
cin>>id;
cout<<"enter the address of the user"<<endl;
{
cout<<"enter the house no."<<endl;
cin>>haddress.hno;
cout<<"enter the area in which the user is currently living"<<endl;
gets(haddress.area);
cout<<"enter the city in which the user is currently living"<<endl;
gets(haddress.city);
cout<<"enter the pincode of the city"<<endl;
cin>>haddress.pincode;
}
cout<<"enter the date of entry"<<endl;
{
cout<<"enter the day"<<endl;
cin>>doer.day;
cout<<"enter the month"<<endl;
cin>>doer.month;
cout<<"enter the year"<<endl;
cin>>doer.year;
}
cout<<"defualt value of status is 1 so enter 1"<<endl;
cin>>status;
}


void display(void)
{
int gdriver = EGA, gmode = EGAHI;
int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=2;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
cout<<name<<" has the library ID "<<id<<endl;
cout<<" who currently lives in "<<endl;
cout<<haddress.hno<<"  "<<haddress.area<<"  "<<haddress.city<<endl;
cout<<haddress.pincode<<endl;
}


void modifyuser(void)
{
cout<<name<<"has the id"<<id<<"living in"<<haddress.hno<<" "<<haddress.area<<" "<<haddress.city<<" "<<haddress.pincode<<endl;
cout<<"enter new details"<<endl;
char nm[100];
int idc;
address ha;
cout<<"enter the new name(press '.' to retain old one)"<<endl;
gets(nm);
cout<<"enter the new id(press 1 to retain old one)"<<endl;
cin>>idc;
cout<<"enter the new address"<<endl;
{
cout<<"enter the new homeno(press 2 to retain old one)"<<endl;
cin>>ha.hno;
cout<<"enter the new area(press '.' to retain old one)"<<endl;
gets(ha.area);
cout<<"enter the new city(press '.' to retain old one)"<<endl;
gets(ha.city);
cout<<"enter the new pincode.(press '3' to retain old one"<<endl;
cin>>ha.pincode;
}
if(strcmp(nm,".")!=0)
strcpy(name,nm);
if(strcmp(ha.area,".")!=0)
strcpy(haddress.area,ha.area);
if(strcmp(ha.city,"."))
strcpy(haddress.city,ha.city);
if(idc!=1)
id=idc;
if(ha.hno!=2)
haddress.hno=ha.hno;
if(ha.pincode!=3)
haddress.pincode=ha.pincode;
}
};
account s1,s2;


void adduser(void)    //*add a user*//
{
ofstream foutuser;
foutuser.open("user.dat",ios::app|ios::binary);
char ans='y';
while(ans=='y')
{
s1.enterdata();
foutuser.write((char*)&s1,sizeof(s1));
cout<<"user added to library"<<endl;
cout<<"do you want to enter more users?(y/n).."<<endl;
cin>>ans;
}
foutuser.close();
mainmenu();
}


void searchuser(void)  //*to search a user*//
{
ifstream finuser;
finuser.open("user.dat",ios::in|ios::binary);
finuser.seekg(0,ios::beg);
int uid;
char found='n';
cout<<"enter the library ID of the user to be searched"<<endl;
cin>>uid;
while(!finuser.eof())
{
finuser.read((char*)&s1,sizeof(s1));
if(s1.getid()==uid)
{
s1.display();
getch();
found='y';
mainmenu();
}
}
if(found=='n')
cout<<"user not registered"<<endl;
getch();
finuser.close();
mainmenu();
}


void deleteuser(void)
{
ifstream fio("user.dat",ios::in|ios::binary);
ofstream file("temp.dat",ios::out|ios::binary);
int uid;
char found='f',confirm='n';
cout<<"enter the ID of the user whom you want to delete"<<endl;
cin>>uid;
while(!fio.eof())
{
fio.read((char*) &s1,sizeof(s1));
if(s1.getid()==uid)
{
s1.display();
found='t';
cout<<"want to continue sure(y/n).."<<endl;
cin>>confirm;
if(confirm=='n')
file.write((char*)&s1,sizeof(s1));
}
else
file.write((char*)&s1,sizeof(s1));
}
if(found=='f')
cout<<"user not found!!"<<endl;
getch();
fio.close();
file.close();
remove("user.dat");
rename("temp.dat","user.dat");
fio.open("lib.dat",ios::in|ios::binary);
cout<<"record updated"<<endl;
cout<<"now the file contains"<<endl;
getch();
while(!fio.eof())
{
fio.read((char*) &s2,sizeof(s2));
if(fio.eof())
break;
s2.display();
getch();
}
mainmenu();
fio.close();
}


void modifyaccount(void)
{
fstream fio("user.dat",ios::in|ios::out|ios::binary);
int uid;
long pos;
char found='f';
fio.seekg(0,ios::beg);
cout<<"enter the id of the user whose record is to be modified"<<endl;
cin>>uid;
while(!fio.eof())
{
pos=fio.tellg();
fio.read((char*)&s1,sizeof(s1));
if(s1.getid()==uid)
{
s1.modifyuser();
fio.seekg(pos);
fio.write((char*)&s1,sizeof(s1));
found='t';
break;
}
}
if(found=='f')
cout<<"record not found!!"<<endl;
fio.seekg(0);
cout<<"now the user file contains"<<endl;
while(!fio.eof())
{
fio.read((char*)&s2,sizeof(s2));
s2.display();
getch();
}
mainmenu();
fio.close();
}

void issuebook(void)
{
char ch;
int m,n,uid;
int rec1=0,rec2=0;
libdate temp;
cout<<"Enter ur library ID"<<endl;
cin>>uid;
fstream iofile("user.dat",ios::in|ios::app|ios::binary);
fstream ifile("lib.dat",ios::in|ios::app|ios::binary);
while(!iofile.eof())
{
if(iofile.eof())
{
mainmenu();
}
iofile.read((char*)&s1,sizeof(s1));
rec1++;
if(uid==s1.getid())
{
n=s1.getstatus();
if(n==2)
{
cout<<"you already have issued one book"<<endl;
getch();
mainmenu();
}
else
cout<<".....Search the book you want to issue"<<endl;
getch();
int bbcode = searchbook();
while(bbcode!=0)
{
cout<<"are u sure u want to take this book(y/n)"<<endl;
cin>>ch;
if(ch=='y'||ch=='Y')
{
while(!ifile.eof())
{
if(ifile.eof())
{mainmenu();}
ifile.read((char*)&b1,sizeof(b1));
rec2++;
if(bbcode==b1.getbcode())
{
m=b1.getissue();
if(m==2)
{
cout<<"Already issued...\n";
mainmenu();
}
else
s1.bid=bbcode;
cout<<"ENTER THE DATE OF ISSUE"<<endl;
{
cout<<"ENTER THE DAY"<<endl;
cin>>temp.day;
cout<<"ENTER THE MONTH"<<endl;
cin>>temp.month;
cout<<"ENTER THE YEAR"<<endl;
cin>>temp.year;
}
s1.doi=temp;
b1.cissuen();
s1.cstatusn();
iofile.seekg((rec1-1)*sizeof(s1),ios::beg);
ifile.seekg((rec2-1)*sizeof(b1),ios::beg);
ifile.write((char*)&b1,sizeof(book));
iofile.write((char*)&s1,sizeof(account));
cout<<" Status updated..\n";
getch();
}
}
ifile.close();
mainmenu();
}
else
{
cout<<"SORRY u can search some other time"<<endl;
ifile.close();
iofile.close();
getch();
mainmenu();
}
}
}
else
cout<<"WRONG ID ENTERED!!!..PLZ ENTER YOUR VALID ID"<<endl;
iofile.close();
getch();
mainmenu();
}
iofile.close();
}





void returnbook(void)                  //* to return a book from user * //
{
int uid,bbcode;
int m;
libdate temp;
m=b1.getissue();
cout<<"ENTER UR LIBRARY ID"<<endl;
cin>>uid;
fstream iofile("user.dat",ios::in|ios::app|ios::binary);
fstream ifile("lib.dat",ios::in|ios::app|ios::binary);
while(iofile)
{
iofile.read((char*)&s1,sizeof(s1));
if(uid==s1.getid())
{
cout<<"valid ID....."<<endl;
cout<<"enter the book code of the book u want to return"<<endl;
cin>>bbcode;
while(ifile)
{
ifile.read((char*)&b1,sizeof(b1));
if(bbcode==b1.getbcode())
{
cout<<"book found checking its status"<<endl;
getch();
if(m==2)
{

cout<<"calculating fine"<<endl;
{
int m,n,p;
if(s1.dor.year==s1.doi.year)
{
if(s1.dor.month==s1.doi.month)
{
if(s1.dor.day-s1.doi.day<4)
{
cout<<"you do not have to pay any fine"<<endl;
}
else
m=s1.dor.day-s1.doi.day;
cout<<"you have to pay a fine of rs."<<m;
}
else
{
if(s1.dor.month-s1.doi.month==1)
{
n=30-s1.doi.day;
if(n+s1.dor.day<4)
{
cout<<"you do not have to pay any fine"<<endl;
}
else
cout<<"you have to pay a fine of rs."<<n+s1.dor.day<<endl;
}
else
cout<<"you have to pay a fine of rs. 200"<<endl;
}
}
else
{
if(s1.dor.year-s1.doi.year==1)
{
if((s1.doi.month==12)&&(s1.dor.month==1))
{
p=30-s1.doi.day;
if(p+s1.dor.day<4)
{
cout<<"you do not have to pay any fine"<<endl;
}
else
cout<<"you have to pay the fine of"<<p+s1.dor.day;
}
else
cout<<"you have to pay the fine of rs. 200"<<endl;
}
else
cout<<"you have to pay the fine of rs. 500"<<endl;
}
}
cout<<"now changing the status of this book"<<endl;
getch();
b1.cissuey();
s1.cstatusy();
cout<<"ENTER THE DATE OF RETURN"<<endl;
{
cout<<"ENTER THE DAY"<<endl;
cin>>temp.day;
cout<<"ENTER THE MONTH"<<endl;
cin>>temp.month;
cout<<"ENTER THE YEAR"<<endl;
cin>>temp.year;
}
s1.dor=temp;
ifile.write((char*)&b1,sizeof(b1));
iofile.write((char*)&s1,sizeof(s1));
mainmenu();
}
else
cout<<"error!this book is free to issue"<<endl;
getch();
mainmenu();
}
else
cout<<"u haven't issued this book kindly check the book id again"<<endl;
getch();
mainmenu();
}
ifile.close();}
else
cout<<"WRONG USER ID ENTRED CHECK AGAIN"<<endl;
getch();
mainmenu();
}
iofile.close();
}

void record(void)
{
int m;
int uid,ubcode;
m=s1.getstatus();
fstream iofile("user.dat",ios::in|ios::app|ios::binary);
while(iofile)
{
iofile.read((char*)&s1,sizeof(s1));
cout<<"Enter your valid library ID"<<endl;
cin>>uid;
if(uid==s1.getid())
{
cout<<"valid ID....checking ur record.."<<endl;
getch();
if(m==1)
{
cout<<"you have not taken any book currently"<<endl;
getch();
mainmenu();
}
else
{
cout<<"you have taken the following book"<<endl;
getch();
ubcode=s1.bid;
ifstream ifile;
ifile.open("lib.dat",ios::in|ios::binary);
ifile.read((char*)&b1,sizeof(b1));
if(ubcode==b1.getbcode())
{
b1.putdata(); 
getch();
}
else
cout<<"!!ERROR!!"<<endl;
getch();
mainmenu();
}
}
else
cout<<"WRONG LIBRARY ID PLZ TRY AGAIN"<<endl;
getch();
mainmenu();
}
iofile.close();
}



void dispalluser(void)
{
ifstream fio("user.dat",ios::in|ios::binary);
fio.seekg(0,ios::beg);
cout<<" the file contains"<<endl;
while(!fio.eof())
{
fio.read((char*)&s1,sizeof(s1));
if(fio.eof())
{
break;
}
else
s1.display();
getch();
}
fio.close();
}



void mainmenu(void)
{
int m,n,mn,ch;
int ans;
    int gdriver = EGA, gmode = EGAHI;
  int bkcol, maxcolor,color;
  char msg[80];
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=4;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);

      gotoxy(25,5);
      cout<<"M A I N  M E N U";
      gotoxy(17,10);
      cout<<"1. BOOKS MENU";
      gotoxy(17,12);
      cout<<"2. ACCOUNT MENU";
      gotoxy(17,14);
      cout<<"3. USER MENU";
      gotoxy(17,16);
      cout<<"4. EXIT";
      gotoxy(40,24);
          cout<<"Enter Option(1-4):";

cin>>m;

switch(m)
{

case 1:
{
 int gdriver = EGA, gmode = EGAHI;
  int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=2;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
gotoxy(20,4);
cout<<" 1 : ADD A BOOK";
gotoxy(20,6);
cout<<" 2 : SEARCH A BOOK";
gotoxy(20,8);
cout<<" 3 : MODIFY A BOOK'S RECORD";
gotoxy(20,10);
cout<<" 4 : DELETE";
gotoxy(20,12);
cout<<" 5 : DISPLAY ALL ";
gotoxy(20,14);
cout<<" 6 : RETURN TO MAIN MENU"<<endl;
gotoxy(20,16);
cout<<"ENTER OPTION(1-7)"<<endl;
cin>>n;

switch(n)
{
case 1:
{
addbook();
break;
}
case 2:
{
searchbook();
break;
}
case 3:
{
modifybook();
break;
}
case 4:
{
deletebook();
break;
}
case 5:
{
dispallbook();
break;
}
case 6:
{
mainmenu();
}
default: cout<<"INVALID ENTRY!!"<<endl;
}
break;
}

case 2:
{
 int gdriver = EGA, gmode = EGAHI;
  int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=11;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
cout<<"1 : CREATE NEW ACCOUNT"<<endl;
cout<<"2 : SEARCH A USER"<<endl;
cout<<"3 : MODIFY A USER'S INFO"<<endl;
cout<<"4 : DELETE A USER"<<endl;
cout<<"5 : DISPLAY ALL USERS"<<endl;
cout<<"6 : RETURN TO MAIN MENU"<<endl;
cout<<"ENTER OPTION(1-6)"<<endl;
cin>>mn;

switch(mn)
{

case 1:
{
adduser();
break;
}
case 2:
{
searchuser();
break;
}
case 3:
{
modifyaccount();
break;
}
case 4:
{
deleteuser();
break;
}
case 5:
{
dispalluser();
break;
}
case 6:
{
mainmenu();
}
default : cout<<"INVALID ENTRY!!"<<endl;
}
break;
}

case 3:
{
 int gdriver = EGA, gmode = EGAHI, errorcode;
  int bkcol, maxcolor,color;
  initgraph(&gdriver, &gmode,"");
  maxcolor = getmaxcolor();
      bkcol=maxcolor=9;
      setbkcolor(bkcol);
      color=maxcolor;
      setcolor(color);
cout<<"welcome to user's manual"<<endl;
cout<<"1: ISSUE BOOK"<<endl;
cout<<"2: RETURN BOOK"<<endl;
cout<<"3: CURRENT RECORD"<<endl;
cout<<"4:RETURN TO MAIN MENU"<<endl;
cout<<"ENTER OPTION(1-4)"<<endl;
cin>>ch;
switch(ch)
{
case 1:
{
issuebook();
break;
}
case 2:
{
returnbook();
break;
}
case 3:
{
record();
break;
}
case 4:
{
mainmenu();
}
default: cout<<"INVALID ENTRY!!"<<endl;
}
break;
}

case 4:
{
cout<<"press any key to continue"<<endl;
exit(0);
break;
}
default:cout<<"INVALID ENTRY!!"<<endl;
}
}



void main()
{
clrscr();
mainmenu();   
getch();
}



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