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Library Management

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Submitted on: 1/8/2015 8:16:00 AM
By: V.Dineshbabu (from psc cd)  
Level: Advanced
User Rating: By 2 Users
Compatibility: C, C++ (general), Microsoft Visual C++
Views: 917
 
     This is a example for Library managment system
 
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//**************************************
// Name: Library Management
// Description:This is a example for Library managment system
// By: V.Dineshbabu (from psc cd)
//**************************************

#include<iostream.h>
#include<stdio.h>
#include<conio.h>
#include <string.h>
#include <process.h>
#include <stdlib.h>
#include <ctype.h>
#include <graphics.h>
#include<dos.h>
#include<iomanip.h>
#define NORMAL 7
class library
{
 private:
	FILE *fp,*ft,*fe;
	int sl;
	long int recsize;
	char another,choice;
	struct LateFine
	{
	 int roll,sno;
	 char name[30];
	 char code[15];
	 float amt;
	}f;
	struct student
	{
	 int roll,sno,sl,dt,mn,yr;
	 char name[30];
	 char code[15];
	}i,r,q;
	struct book
	{
	 int sno;
	 char name[30];
	 char auth[30];
	 char pub[25];
	 float price;
	}b;
 public:
	void boxb(int r,int c,int r1,int c1,char m[]);
	int menu(int col,int r,int c,int npara,char *pop[]);
	void about();
	void bookpurchage();
	void booklist();
	void bookissue();
	void issuelist();
	void bookreturn();
	void returnlist();
	void querybystd();
	void querybybook();
	void latefine();
	void delreturn();
	void modifyentry();
	void flash();
};
// Function to get overview of project
void library::bookpurchage()
{
 int temp=0;
 fp = fopen ("RECORD.DAT","rb+");
 if(fp == NULL)
 {
fp = fopen ("RECORD.DAT","wb+");
if(fp == NULL)
{
 puts("Can not open file");
 exit(0);
 }
}
 recsize=sizeof(b);
 fseek(fp,0,SEEK_END);
 another='y';
 rewind(fp);
 while(fread(&b,recsize,1,fp)==1)
 {
temp=b.sno;
}
 while(another=='y')
 {
textbackground(9);
clrscr();
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);
cprintf(" [BOOKSS ] ");
textattr(7);
b.sno=temp+1;
temp++;
gotoxy(10,10);cout<<"BOOK_NO: "<<b.sno;
flushall();
gotoxy(10,11);cout<<"BOOK_NAME : ";
gets(b.name);
flushall();
gotoxy(10,12);cout<<"AUTHOR_NAME: ";
gets(b.auth);
flushall();
gotoxy(10,13);cout<<"PUBLICATION: ";
gets(b.pub);
flushall();
gotoxy(10,14);cout<<"PRICE : ";
cin>>b.price;
flushall();
gotoxy(10,16);cout<<"Do you want to save(y/n): ";
another=getche();
if(another!='y')
temp--;
else
fwrite(&b,recsize,1,fp);
gotoxy(10,17);cout<<"Add another records(Y/N): ";
fflush(stdin);
another=getche();
 }
 clrscr();
 return;
}
void library::booklist()
{
 int c=1;
 fp = fopen ("RECORD.DAT","rb+");
 recsize=sizeof(b);
 rewind(fp);
 textbackground(9);
 clrscr();
 flash();
 textattr(697);
 textcolor(692);
 gotoxy(3,4);cprintf(" [ BOOKS ] ");
 textattr(7);
 gotoxy(2,7);cout<<"BOOK_NO. BOOKS_NAME AUTHOR PUBLICATIONPRICE ";
gotoxy(2,8);cout<<"---------------------------------";
 while (fread (&b,recsize,1,fp) == 1)
 {
 flash();
 textattr(697);
 textcolor(692);
 gotoxy(3,4);cprintf("[ BOOKS] ");
 textattr(7);
 gotoxy(2,8+c);
 cprintf(" %-6d ",b.sno);
 cprintf(" %-20.20s ",b.name);
 cprintf(" %-18.18s ",b.auth);
 cprintf(" %-15.15s",b.pub);
 cprintf(" %9.2f ",b.price);
 c++;
 if(c>11)
{
c=1;
gotoxy(55,20);
cout<<"Press key to next";
getch();
textbackground(9);
clrscr();
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf(" [ BOOKS]");
textattr(7);
gotoxy(2,7);cout<<"BOOK_NO. BOOKS_NAMEAUTHORPUBLICATIONPRICE ";
gotoxy(2,8);cout<<"-------------------------------------------------";
}
 }
 gotoxy(60,20);cout<<"End of List";
 getch();
 clrscr();
 return;
}
int library::menu(int color,int r,int c,int npara,char *popup[])
{
 int r1=r+(npara-1),k=0,i=0,j=1,r2=r;
 textattr(color);gotoxy(c,r2);cprintf(popup[0]);
 r2++;
 textattr(919);
 textcolor(7);
 for(j=1;j<npara;j++,r2++)
 {
gotoxy(c,r2);cprintf(popup[j]);
 }
 do
 {
k=getch();
switch(k)
{
 case 80 :
		gotoxy(c,r);textattr(919);textcolor(7);cprintf(popup[i]);
		r++;
		i++;
		if(r>r1)
		{
		 r=r1-(npara-1);
		 i=0;
		 gotoxy(c,r);textattr(color);cprintf(popup[i]);
		}
		 gotoxy(c,r);textattr(color);cprintf(popup[i]);
		 break;
 case 72 :
		gotoxy(c,r);textattr(919);textcolor(7);cprintf(popup[i]);
		r--;
		i--;
		if(r<r1 -(npara-1))
		{
		 r=r1;
		 i=npara-1;
		 gotoxy(c,r);textattr(color);cprintf(popup[i]);
		}
		 gotoxy(c,r);textattr(color);cprintf(popup[i]);
		 break;
}
}while(k!=13);
 return i+1;
}
void library::boxb(int r,int c,int r1,int c1,char m[])
{
 int i;
 if(m=="S")
{
gotoxy(c,r);printf("%c",218);
gotoxy(c1,r);printf("%c",191);
gotoxy(c,r1);printf("%c",192);
gotoxy(c1,r1);printf("%c",217);
for(i=c+1;i<c1;i++)
 {
gotoxy(i,r);printf("%c",196);
gotoxy(i,r1);printf("%c",196);
 }
for(i=r+1;i<r1;i++)
 {
gotoxy(c,i);printf("%c",179);
gotoxy(c1,i);printf("%c",179);
 }
}
 else
{
gotoxy(c,r);printf("%c",201);
gotoxy(c1,r);printf("%c",187);
gotoxy(c,r1);printf("%c",200);
gotoxy(c1,r1);printf("%c",188);
for(i=c+1;i<c1;i++)
 {
gotoxy(i,r);printf("%c",205);
gotoxy(i,r1);printf("%c",205);
 }
for(i=r+1;i<r1;i++)
 {
gotoxy(c,i);printf("%c",186);
gotoxy(c1,i);printf("%c",186);
 }
}
 return;
}
void library::flash()
{
 boxb(2,1,5,79, "S");
 boxb(6,1,20,79, "D");
 boxb(21,1,24,79,"D");
 textattr(697);
 textcolor(692);
 gotoxy(3,3);cprintf(" [LIBRARY INFORMATION SYSTEM] ");
 textattr(697);textattr(693);
 gotoxy(3,22);cprintf(" Designed By :- II YEAR IT");
 gotoxy(3,23);cprintf(" M.K.E.C");
 textattr(7);
}
void library::about()
{
 textbackground(9);
 clrscr();
 flash();
 textattr(697);
 textcolor(692);
 gotoxy(3,4);cprintf(" [ VIEW ] ");
 textattr(919);
 gotoxy(10,7) ;textcolor(4);cprintf("This L.I.S. Package has been designed to maintain computerised ");
 gotoxy(10,8) ;textcolor(2);cprintf("Library work very easily by a librarian. It can run under DOS/ ");
 gotoxy(10,9) ;textcolor(5);cprintf("Windows Environment. ");
gotoxy(10,10);textcolor(3);cprintf("........................... ");
 gotoxy(10,11);textcolor(6);cprintf(" STUDENTS");
 gotoxy(10,12);cprintf(" B.E (IT)");
 gotoxy(10,13);cprintf("M.K.E.C");
 gotoxy(10,14);puts(" *******************");
 textcolor(2);
 gotoxy(10,16);textcolor(3);cprintf("........");
 textattr(7);textbackground(3);textcolor(5);
 gotoxy(55,20);textcolor(804);cprintf("Press any key to Next ");
// sound(2100);
// delay(1000);
 getch();
// nosound();
 textattr(7);
 clrscr();
}
void library::bookissue()
{
 int temp=0,tem=0;
 fp = fopen ("BISSUE.DAT","rb+");
 if(fp == NULL)
{
 fp = fopen ("BISSUE.DAT","wb+");
 if(fp == NULL)
 {
puts("Can not open file");
exit(0);
 }
}
 ft=fopen("RECORD.DAT","rb");
 recsize=sizeof(i);
 fseek(fp,0,SEEK_END);
 another='y';
 choice='y';
 rewind(fp);
 while(fread(&i,recsize,1,fp)==1)
temp=sl;
 while(another=='y')
 {
textbackground(9);
clrscr();
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf(" [ BOOKS]");
textattr(7);
sl=temp+1;
temp++;
flushall();
gotoxy(10,11);cout<<"BOOK_NO: ";
cin>>i.sno;
flushall();
rewind(ft);
while(fread(&b,sizeof(b),1,ft)==1)
{
if (i.sno==b.sno)
 {
 tem=i.sno;
 rewind(fp);
 while(fread(&i,recsize,1,fp)==1)
 {
if(tem==i.sno)
	{
gotoxy(2,7);
cout<<"-------------------------";
	 gotoxy(2,8);cout<<"BOOK_NO: "<<i.sno<<" IS NOT PRESENT ! PLEASE ENTRER NEW BOOK NUMBER";
gotoxy(2,9);cout<<"-------------------------------";
	 goto a;
	}
 }
 i.sno=tem;
 gotoxy(2,7);cout<<"BOOK NO. BOOK's NAME AUTHOR PUBLICATIONPRICE ";
gotoxy(2,8);cout<<"------------------------------------------------";
 gotoxy(2,9);printf(" %-6d %-20.20s %-18.18s %-15.15s %9.2f",b.sno,b.name,b.auth,b.pub,b.price);
gotoxy(2,10);cout<<"------------------------------------------";
 gotoxy(10,12);cout<<"STUDENT_ROLL : ";
 cin>>i.roll;
 flushall();
 gotoxy(10,13);cout<<"STUDENT_NAME : ";
 gets(i.name);
 flushall();
 gotoxy(10,14);cout<<"COURSE_CODE: ";
 gets(i.code);
 flushall();
 gotoxy(10,15);cout<<"ISSUE_DATE: ";
 cin>>i.dt;
 gotoxy(28,15);cout<<"-";cin>>i.mn;
 gotoxy(31,15);cout<<"-";cin>>i.yr;
 flushall();
 gotoxy(10,17);cout<<"Do you want to save(Y/N): ";
 choice=getche();
 if(choice=='y')
fwrite(&i,recsize,1,fp);
goto a;
 }
}
gotoxy(2,7);cout<<"-------------------------------";
gotoxy(2,8);cout<<"BOOK_NO: "<<i.sno<<" IS NOT IN LIBRARY ! ";
gotoxy(2,9);cout<<"-------------------------------";
a:
gotoxy(10,18);cout<<"Issue Another Book (Y/N): ";
fflush(stdin);
another=getche();
 }
 clrscr();
 fclose(ft);
 fclose(fp);
 return;
}
void library::bookreturn()
{
 int temp=0;
 FILE *fm,*ff;
 fp = fopen ("BRETURN.DAT","rb+");
 if(fp == NULL)
{
fp = fopen ("BRETURN.DAT","wb+");
if(fp == NULL)
 {
 puts("Can not open file");
 exit(0);
 }
}
 ft=fopen("RECORD.DAT","rb");
 fe=fopen ("BISSUE.DAT","rb+");
 recsize=sizeof(r);
 fseek(fp,0,SEEK_END);
 another='y';
 choice='y';
 rewind(fp);
 while(fread(&r,recsize,1,fp)==1)
 {
temp=r.sl;
}
 while(another=='y')
 {
textbackground(9);
clrscr();
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf(" [BOOKS] ");
textattr(7);
r.sl=temp+1;
temp++;
gotoxy(10,11);cout<<"BOOK_NO: ";
cin>>r.sno;
flushall();
rewind(ft);
while(fread(&b,sizeof(b),1,ft)==1)
{
if (r.sno==b.sno)
 {
 rewind(fe);
 while(fread(&i,sizeof(i),1,fe)==1)
 {
if(r.sno==i.sno)
{
	gotoxy(2,7);cout<<"BOOK_NO BOOKS_NAME ISSUED TO ROLL C_CODEISSUE_DATE ";
gotoxy(2,8);cout<<"------------------------------------";
	gotoxy(2,9);cprintf(" %-6d %-17.17s %-16.16s%-5d %-8.8s %02d-%02d-%02d ",i.sno,b.name,i.name,i.roll,i.code,i.dt,i.mn,i.yr);
gotoxy(2,10);cout<<"-----------------------------------------------------------------";
	gotoxy(10,12);cout<<"STUDENT_ROLL : ";
	cin>>r.roll;
	flushall();
	gotoxy(10,13);cout<<"STUDENT_NAME : ";
	gets(r.name);
	flushall();
	gotoxy(10,14);cout<<"COURSE_CODE: ";
	gets(r.code);
	flushall();
	gotoxy(10,15);cout<<"RETURN_DATE: ";
	cin>>r.dt;
	gotoxy(28,15);cout<<"-";cin>>r.mn;
	gotoxy(31,15);cout<<"-";cin>>r.yr;
	flushall();
 /*
 int total,tmp=0,d=0,m=0,y=0;
 float fine;
ff = fopen ("FINE.DAT","rb+");
if(ff == NULL)
{
ff = fopen ("FINE.DAT","wb+");
if(ff == NULL)
 {
 puts("File Not Found");
 exit(0);
 }
}
 if (r.dt>=i.dt)
{
d=r.dt-i.dt;
if(r.mn>=i.mn)
 {
m=r.mn-i.mn;
y=r.yr-i.yr;
 }
else
 {
r.yr=r.yr-1;
r.mn=r.mn+12;
m=r.mn-i.mn;
y=r.yr-i.yr;
 }
}
 else
{
r.mn=r.mn-1;
r.dt=r.dt+30;
d =r.dt-i.dt;
if(r.mn>=i.mn)
 {
 m=r.mn-i.mn;
 y=r.yr-i.yr;
 }
else
 {
 r.yr=r.yr-1;
 r.mn=r.mn+12;
 m=r.mn-i.mn;
 y=r.yr-i.yr;
 }
}
 total=d+(m*30)+(y*12*30);
 if (total>=7)
 {
 total=total-7;
 fine=total*1.00;
 recsize=sizeof(f);
 fseek(ff,0,SEEK_END);
 rewind(ff);
 while(fread(&f,recsize,1,ff)==1)
 {
tmp=f.sno;
}
 f.sno=tmp+1;
 f.roll=i.roll;
 strcpy(f.name,i.name);
 strcpy(f.code,i.code);
 f.amt=fine;
 fwrite(&f,recsize,1,ff);
 }
*/
	gotoxy(10,16);cout<<"Do you want to save(Y/N): ";
	choice=getche();
	if(choice=='y')
	{
	 fwrite(&r,recsize,1,fp);
	 fm=fopen("TEMP.DAT","wb");
	 rewind(fe);
	 while(fread(&i,sizeof(i),1,fe)==1)
	 {
	 if(r.sno!=i.sno)
	 fwrite(&i,sizeof(i),1,fm);
	 }
	 fclose(fe);
	 fclose(fm);
	 remove("BISSUE.DAT");
	 rename("TEMP.DAT","BISSUE.DAT");
	 fe=fopen("BISSUE.DAT","rb+");
	}
	goto a;
}
 }
 }
}
gotoxy(2,7);cout<<" -----------------------------------------------------------------------------";
gotoxy(2,8);cout<<"BOOK_NO: "<<r.sno<<" IS NOT ISSUED BOOK ! ";
gotoxy(2,9);cout<<"---------------------------------------------------";
a:
gotoxy(10,17);cout<<"Return Another Book (Y/N): ";
fflush(stdin);
another=getche();
 }
 clrscr();
 fclose(ft);
 fclose(fp);
 fclose(fe);
 return;
}
void library::querybystd()
{
 int c=0;
 fp=fopen("RECORD.DAT","rb");
 ft=fopen("BISSUE.DAT","rb");
 textbackground(9);
 clrscr();
 flash();
 textattr(697);
 textcolor(692);
 gotoxy(3,4);cprintf("[Queries by dent] ");
 textattr(7);
 gotoxy(10,13);cout<<"Student's Roll: ";
 cin>>q.roll;
 flushall();
 gotoxy(10,14);cout<<"Course Code: ";
 gets(q.code);
 flushall();
 textbackground(9);
 clrscr();
 flash();
 textattr(697);
 textcolor(692);
 gotoxy(3,4);cprintf(" [Queries by dent] ");
 textattr(7);
 rewind(ft);
 while(fread(&i,sizeof(i),1,ft)==1)
 {
 if((strcmpi(q.code,i.code)==0)&&(q.roll==i.roll))
 {
textattr(7);
gotoxy(55,22);cout<<"Roll: "<<q.roll;
gotoxy(55,23);cout<<"Name: "<<i.name;
gotoxy(2,7);cout<<"BOOK_NO. BOOKS_NAME AUTHOR PUBLICATIONISSUE_DATE ";
gotoxy(2,8);cout<<"----------------------------------------------------------------------";
gotoxy(2,9+c);cout<<" ";
rewind(fp);
while(fread(&b,sizeof(b),1,fp)==1)
	{
	 while(i.sno==b.sno)
	 {
	gotoxy(2,9+c);cprintf(" %-6d%-20.20s%-13.13s%-11.11s %02d-%02d-%02d",i.sno,b.name,b.auth,b.pub,i.dt,i.mn,i.yr);
gotoxy(2,10+c);cout<<"----------------------------------------";
	c++;
	break;
	 }
	 }
	gotoxy(50,20);cout<<" Total Number of Books: "<<c;
}
 }
if(c<=0)
 {
 gotoxy(10,12);cout<<"--------RECORD NOT FIND---------------------- ";
 }
getch();
clrscr();
return ;
}
/*
void querybybook()
{
 int bno;
 clrscr();
 flash();
 textattr(500);
 gotoxy(3,4);cprintf(" [ Queries by
 ] ");
 textattr(7);
 gotoxy(10,13);printf("Book's Sl.No. : ");
 scanf("%d",&bno);
 flushall();
 gotoxy(55,20);puts("Under Construction ");
 getch();
 textattr(7);
 clrscr();
 return;
}
void latefine()
{
 int
total,d=0,m=0,y=0,d1=e.dt,d2=r.dt,m1=e.mn,m2=r.mn,y1=e.yr,y2=r.yr;
 float fine;
fp = fopen ("FINE.DAT","rb+");
if(fp == NULL)
{
fp = fopen ("FINE.DAT","wb+");
if(fp == NULL)
 {
 puts("File Not Found");
 exit(0);
 }
}
 if (r.dt>=e.dt)
{
d=r.dt-e.dt;
if(r.mn>=e.mn)
 {
m=r.mn-e.mn;
y=r.yr-e.yr;
 }
else
 {
r.yr=r.yr-1;
r.mn=r.mn+12;
mn=r.mn-b.mn;
y=r.yr-e.yr;
 }
}
 else
{
r.mn=r.mn-1;
r.dt=r.dt+30;
d =r.dr-e.dt;
if(r.mn>=e.mn)
 {
 m=r.mn-e.mn;
 y=r.yr-e.yr;
 }
else
 {
 r.yr=r.yr-1;
 r.mn=r.mn+12;
 m=r.mn-e.mn;
 y=r.yr-e.yr;
 }
}
 total=d+(m*30)+(y*12*30);
 if (total>=7)
 {
 total=total-7;
 fine=total*1.00;
 }
 clrscr();
 flash();
 textattr(500);
 gotoxy(3,4);cprintf(" [Late Fine
ils ] ");
 textattr(7);
 gotoxy(3,7);printf("Sl.No. Roll NoName of Students
Course
codeLate Fine (Rs)");
gotoxy(2,8);printf("------------------------------------------------------
-----------------------");
 gotoxy(3,10);printf(" Difference date :%02d-%02d-%02d
",d,m,y);
 gotoxy(3,11);printf(" Late Fine of %d days is Rs. %.2f",total,fine);
 gotoxy(55,20);puts("Under Construction ");
 getch();
 textattr(7);
 clrscr();
 return;
}
*/
void library::issuelist()
{
 int c=1;
 fp = fopen("BISSUE.DAT","rb+");
 ft = fopen("RECORD.DAT","rb+");
 recsize=sizeof(i);
 rewind(fp);
 textbackground(9);
 clrscr();
 flash();
 textattr(697);
 textcolor(692);
 gotoxy(3,4);cprintf(" [ISSUED BOOKS TAILS] ");
 textattr(7);
 gotoxy(2,7);cout<<" ISSUED TO ROLL C_Code BOOK_NO BOOKS_NAME AUTHOR ISSUE_DATE ";
gotoxy(2,8);cout<<"--------------------------------------------------------------------------";
 while (fread (&i,recsize,1,fp) == 1)
 {
 flash();
 textattr(697);
 textcolor(692);
 gotoxy(3,4);cprintf(" [ISSUED BOOKSTAILS] ");
 textattr(7);
 gotoxy(2,8+c);
 cprintf(" %-15.15s ",i.name);
 cprintf(" %-3d ",i.roll);
 cprintf(" %-6.6s ",i.code);
 cprintf(" %-5d",i.sno);
 fflush(stdin);
rewind(ft);
while(fread(&b,sizeof(b),1,ft)==1)
{
if (i.sno==b.sno)
{
 cprintf(" %-14.14s ",b.name);
 cprintf(" %-10.10s ",b.auth);
 }
}
 cprintf(" %02d-%02d-%02d ",i.dt,i.mn,i.yr);
 c++;
 if(c>10)
{
c=1;
gotoxy(55,20);cout<<"Press key to next ";
getch();
textbackground(9);
clrscr();
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf("[ ISSUED BOOKS ILS ] ");
textattr(7);
gotoxy(2,7);cout<<"Sl.No. ISSUED TOROLL C_Code BOOK_NO BOOKS_NAMEISSUE_DATE ";
gotoxy(2,8);cout<<"-----------------------------";
}
 }
 gotoxy(60,20);cout<<"End of List ";
 getch();
 clrscr();
 return;
}
void library::returnlist()
{
 int c=1;
 fp = fopen ("BRETURN.DAT","rb+");
 ft = fopen ("RECORD.DAT","rb+");
 recsize=sizeof(r);
 rewind(fp);
 textbackground(9);
 clrscr();
 flash();
 textattr(697);
 textcolor(692);
 gotoxy(3,4);cprintf("[ RETURNED BOOKS DETAILS ] ");
 textattr(7);
 gotoxy(2,7);cout<<"Sl.No. RETURNED BY ROLL C_Code BOOK_NO BOOKS_NAMERETURN_DATE";
gotoxy(2,8);
cout<<"---------------------------";
 while (fread (&r,recsize,1,fp) == 1)
 {
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf(" [ RETURNED BOOKS DETAILS ] ");
textattr(7);
gotoxy(2,8+c);
cprintf(" %-5d",r.sl);
cprintf(" %-16.16s ",r.name);
cprintf(" %-3d ",r.roll);
cprintf(" %-8.8s ",r.code);
cprintf(" %-5d ",r.sno);
rewind(ft);
while(fread(&b,sizeof(b),1,ft)==1)
{
if (r.sno==b.sno)
cprintf(" %-16.16s ",b.name);
}
cprintf(" %02d-%02d-%02d",r.dt,r.mn,r.yr);
c++;
if(c>10)
{
c=1;
gotoxy(55,20);
cout<<"Press key to next ";
getch();
textbackground(9);
clrscr();
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf("[ RETURNED BOOKS DETAILS ] ");
textattr(7);
gotoxy(2,7);cout<<"Sl.No. RETURNED BY ROLL C_Code BOOK_NO BOOKS_NAMERETURN_DATE";
gotoxy(2,8);cout<<"-----------------------------------------------";
}
 }
 gotoxy(60,20);cout<<"End of List ";
 getch();
 clrscr();
 return;
}
void library::modifyentry()
{
 int sn;
 fp=fopen("RECORD.DAT","rb+");
 recsize=sizeof(b);
 another='y';
 while(another=='y')
{
textbackground(9);
clrscr();
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf(" [ MODIFY DS ] ");
textattr(7);
gotoxy(10,8);cout<<"Enter BOOK_NO to Modify: ";
cin>>sn;
rewind(fp);
while(fread(&b,recsize,1,fp)==1)
 {
 if(sn==b.sno)
{
	clrscr();
	flash();
	textattr(697);
	textcolor(692);
	gotoxy(3,4);cprintf("[ MODIFY RECORDS ] ");
	textattr(7);
	gotoxy(2,7);printf("BOOK_NO BOOKS_NAMEAUTHOR PUBLICATIONPRICE ");
gotoxy(2,8);cout<<"------------------------------------------------------------";
	gotoxy(2,9);printf(" %-6d %-20.20s %-18.18s %-15.15s %9.2f",b.sno,b.name,b.auth,b.pub,b.price);
gotoxy(2,10);cout<<"----------------------------------------------------------------------------";
	gotoxy(10,12);cout<<"Enter new entries: ";
	gotoxy(10,13);cout<<"BOOK_NO: "<<b.sno;
	flushall();
	gotoxy(10,14);cout<<"BOOKS_NAME: ";
	gets(b.name);
	flushall();
	gotoxy(10,15);cout<<"AUTHOR: ";
	gets(b.auth);
	flushall();
	gotoxy(10,16);cout<<"PUBLICATION: ";
	gets(b.pub);
	flushall();
	gotoxy(10,17);cout<<"PRICE : ";
	cin>>b.price;
	fflush(stdin);
	fseek(fp,-recsize,SEEK_CUR);
	fwrite(&b,recsize,1,fp);
}
 else
{
	flash();
	textattr(697);
	textcolor(692);
	gotoxy(3,4);cprintf(" [ MODIFY DS ] ");
	textattr(7);
	gotoxy(10,12);cout<<"------------------------NO RECORD FOUND----------------------- ";
}
 }
 gotoxy(45,19);cout<<" Modify another records(Y/N): ";
 fflush(stdin);
 another=getche();
}
 clrscr();
 fclose(fp);
 return;
}
void library::delreturn()
{
 int sn;
 fp=fopen("BRETURN.DAT","rb+");
 recsize=sizeof(r);
 another='y';
 while(another=='y')
{
textbackground(9);
clrscr();
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf(" [ DELETE DS ] ");
textattr(7);
gotoxy(10,8);cout<<"Enter BOOK_NO to Delete: ";
cin>>sn;
ft=fopen("TEMP.DAT","wb");
rewind(fp);
while(fread(&r,recsize,1,fp)==1)
 {
 if(sn!=r.sno)
	fwrite(&r,recsize,1,ft);
 }
fclose(fp);
fclose(ft);
remove("BRETURN.DAT");
rename("TEMP.DAT","BRETURN.DAT");
fp=fopen("BRETURN.DAT","rb+");
textbackground(9);
clrscr();
flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf(" [ DELETE DS ] ");
textattr(7);
gotoxy(10,12);cout<<"------------------------RECORDDELETED----------------------- ";
gotoxy(45,19);cout<<"Delete Another(y/n): ";
fflush(stdin);
another=getche();
}
 clrscr();
 fclose(fp);
 return;
}
int main()
{
 library gen,issue,retrn,query;
 int m;
 static char *popup[13]={"01. LIST OF BOOKS","02. LIST OF ISSUED BOOKS ","03. LIST OF RETURNED BOOKS","04. BOOKS ISSUE ","05. BOOKS RETURN ","06. BOOKS PURCHAGE ","07. MODIFY PURCHAGE","08. DELETE RETURN","09.QUERY BY BOOK","10. QUERY BY STUDENT ","11. LATE FINE DETAILS","12.ABOUT APPLICATION","13. EXIT"};
//int gdriver = DETECT, gmode, errorcode;
//initgraph(&gdriver, &gmode, "");
//closegraph();
 do
 {
textbackground(9);
clrscr();
gen.flash();
textattr(697);
textcolor(692);
gotoxy(3,4);cprintf("");
textattr(917);
textcolor(2);
gen.boxb(6,13,20,65,"D");
gotoxy(28,21); cprintf("SELECT HIGHLIGHTED OPTION");
m=gen.menu(498,7,30,13,popup);
gotoxy(70,24);
if(m==1)
{
 flushall();
 textattr(7);
 clrscr();
 gen.booklist();
}
if(m==2)
{
 flushall();
 textattr(7);
 clrscr();
 issue.issuelist();
}
if(m==3)
{
flushall();
textattr(7);
clrscr();
retrn.returnlist();
}
if(m==4)
{
flushall();
textattr(7);
clrscr();
issue.bookissue();
}
if(m==5)
{
flushall();
textattr(7);
clrscr();
retrn.bookreturn();
}
if(m==6)
{
flushall();
textattr(7);
clrscr();
gen.bookpurchage();
}
if(m==7)
{
flushall();
textattr(7);
clrscr();
gen.modifyentry();
}
if(m==8)
{
flushall();
textattr(7);
clrscr();
retrn.delreturn();
}
if(m==9)
{
flushall();
textattr(7);
clrscr();
//query.querybybook();
}
if(m==10)
{
flushall();
textattr(7);
clrscr();
query.querybystd();
}
if(m==11)
{
flushall();
textattr(7);
clrscr();
//latefine();
}
if(m==12)
{
flushall();
textattr(7);
clrscr();
gen.about();
}
if(m==13)
{
flushall();
textattr(7);
clrscr();
exit(0);
}
 }while(m!=13);
 return 0;
}


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