lib.cpp

#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 ends here

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;}
};         //class ends here

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 the current date in backside of your book and submit within 15 days fine Rs. 1 for each day     after15 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();
	cout<<"\n\nLIBRARY";
	cout<<"\nMANAGEMENT";
	cout<<"\nSYSTEM";
	cout<<"\n\nMADE BY : Abhinav Dubey";
	cout<<"\nSCHOOL : Deepanshu Public School";
	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: return;
	}
	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 :exit(0);
		}
	}while(ch!='4');
}