lms.cpp

#include <iostream>
#include <bits/stdc++.h>
#include <windows.h>
#include <conio.h>
#include <stdlib.h>
#include <iomanip> //for using setw()
#include <string.h>
using namespace std;
class book
{
	char bno[6];
	char bname[50];
	char aname[20];

public:
	void createbook()
	{
		cout << endl
			 << "New Book Entry" << endl;
		cout << endl
			 << "Enter the Book No.";
		cin >> bno;
		cout << endl
			 << "Enter the Book Name" << endl;
		gets(bname);
		cout << endl<< "Enter the Book Author Name" << endl;
		gets(aname);
		cout << endl
			 << endl
			 << endl
			 << "Book created";
	}
	void showbook()
	{
		cout << endl
			 << "Book Number : " << bno;
		cout << endl
			 << "Book Name :";
		puts(bname);
		cout << endl
			 << "Author Name :";
		cout << aname;
	}

	void modifybook()
	{
		cout << endl
			 << "Enter Number : " << bno;
		cout << endl
			 << "Modify Book Name :";
		gets(bname);
		cout << endl
			 << "Modify Author's Name :";
		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]; //which book student has issued
	int token;	   //total no. of books issued by students
public:
	void createstudent()
	{
		system("cls");
		cout << endl
			 << "New Student Entry" << endl;
		cout << endl<< "Enter the Admission number";
		cin >> admno;
		cout << endl<< "Enter the Student Name";
		cin.ignore();
		gets(name);
		token = 0;
		stbno[0] = '\0';
		cout << endl
			 << endl
			 << "Student Record Created";
	}
	void showstudent()
	{
		cout << endl
			 << "Admission Number :" << admno;
		cout << endl
			 << "Student Name : ";
		puts(name);
		cout << endl
			 << "No of Book Issued :" << token;
		if (token == 1) // only one book issued by the student
		{
			cout << endl
				 << "Book number " << stbno;
		}
	}
	void modifystudent()
	{
		cout << endl
			 << "Admission No." << admno;
		cout << endl
			 << "Modify 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 writebook() //function to write on a book using file handling..
{
	char ch;
	fp.open("book.txt", ios ::out | ios ::app);
	do
	{
		system("cls");
		bk.createbook();
		fp.write((char *)&bk, sizeof(book));
		cout << endl
			 << endl
			 << "Do you want to add more record (y/n)?";
		cin >> ch;
	} while (ch == 'y' || ch == 'Y');
	fp.close();
}

void writestudent() //function to write on a student using file handling..
{
	char ch;
	fp.open("student.txt", ios ::out | ios ::app);
	do
	{
		system("cls");
		st.createstudent();
		fp.write((char *)&st, sizeof(student));
		cout << endl
			 << endl
			 << "Do you want to add more record (y/n)?";
		cin >> ch;
	} while (ch == 'y' || ch == 'Y');
	fp.close();
}

void displayspb(char n[]) //searching book
{
	cout << endl
		 << "Book Details" << endl;
	int flag = 0;
	fp.open("book.txt", ios::in);
	while (fp.read((char *)&bk, sizeof(book)))
	{
		if (strcmpi(bk.retbno(), n) == 0) //strcmpi ignores casesenstive
		{
			bk.showbook();
			flag = 1;
		}
	}
	fp.close();
	if (flag == 0)
	{
		cout << endl
			 << endl
			 << "Book does not exist";
		getch();
	}
}
void displaysps(char n[]) //searching student
{
	cout << endl
		 << "Student Details" << endl;
	int flag = 0;
	fp.open("student.txt", ios::in);
	while (fp.read((char *)&st, sizeof(student)))
	{
		if (strcmpi(st.retadmno(), n) == 0) //strcmpi ignores casesenstive
		{
			st.showstudent();
			flag = 1;
		}
	}
	fp.close();
	if (flag == 0)
	{
		cout << endl
			 << endl
			 << "Student does not exist";
		getch();
	}
}

void modifybook() //updating book
{
	char n[6];
	int found = 0;
	system("cls");
	cout << endl<< endl<< "Modify Book Record ";
	cout << endl<< endl<< "Enter the Book Number ";
	cin >> n;
	fp.open("book.txt", ios::in | ios::out);
	while (fp.read((char *)&bk, sizeof(book)) && found == 0)
	{
		if (strcmpi(bk.retbno(), n) == 0)
		{
			bk.showbook();
			cout<<endl<<"Enter the new details of the book "<<endl;
			bk.modifybook();
			int pos = -1*sizeof(bk);
			fp.write((char*)&bk,sizeof(book));
			fp.seekp(pos,ios::cur);
			cout<<endl<<endl<<"Record Updated";
			found=1;

		}
	}
	fp.close();
	if(found == 0)
	{
		cout<<endl<<endl<<"Record not found";
	}
	getch();
}


void modifystudent() //updating student
{
	char n[6];
	int found = 0;
	system("cls");
	cout << endl<< endl<< "Modify Student Record ";
	cout << endl<< endl<< "Enter Admission  Number ";
	cin >> n;
	fp.open("student.txt", ios::in | ios::out);
	while (fp.read((char *)&st, sizeof(student)) && found == 0)
	{
		if (strcmpi(st.retadmno(), n) == 0)
		{
			st.showstudent();
			cout<<endl<<"Enter the new details of the Student "<<endl;
			st.modifystudent();
			int pos = -1*sizeof(st );
			fp.write((char*)&st,sizeof(student));
			fp.seekp(pos,ios::cur);
			cout<<endl<<endl<<"Record Updated";
			found=1;

		}
	}
	fp.close();
	if(found == 0)
	{
		cout<<endl<<endl<<"Record not found";
	}
	getch();
}

void deletestudent()
{
	char n[6];
	int flag=0;
	system("cls");
	cout<<endl<<endl<<endl<<"Delete Student";
	cout<<endl<<"Enter the Admission Number";
	cin>>n;
	fp.open("student.txt",ios::in|ios::out);
	fstream fp2;
	fp2.open("temp.txt",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;
		}
	}
	fp.close();
	fp2.close();
	remove("student.txt");
	rename("temp.txt","student.txt");
	if(flag==1)
	{
		cout<<endl<<endl<<"Record deleted";
	}
	else
	{
		cout<<endl<<endl<<"Record not found";		
	}
	getch();
}

void deletebook()
{
	char n[6];
	int flag=0;
	system("cls");
	cout<<endl<<endl<<endl<<"Delete Book";
	cout<<endl<<"Enter the Book Number";
	cin>>n;
	fp.open("book.txt",ios::in|ios::out);
	fstream fp2;
	fp2.open("Temp.txt",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));
		}
		else
		{
			flag=1;
		}
	}
	fp.close();
	fp2.close();
	remove("book.txt");
	rename("Temp.txt","book.txt");
	if(flag==1)
	{
		cout<<endl<<endl<<"Record deleted";
	}
	else
	{
		cout<<endl<<endl<<"Record not found";		
	}
	getch();
}

void displayalls()
{
	system("cls");
	fp.open("student.txt",ios::in);
	if(!fp) //return true
	{
		cout<<"File not found";
		getch();
		return;
	}
	cout<<endl<<endl<<"\t Student List"<<endl<<endl;
	cout<<"=========================================="<<endl;
	cout<<"\t Admission Number"<<setw(10)<<"Name"<<setw(20)<<"Book Issued"<<endl;
	cout<<"================================================="<<endl;
	
	while(fp.read((char*)&st,sizeof(student)))	
	{
		st.report();
	}
	fp.close();
	getch();
}

void displayllb()
{
	system("cls");
	fp.open("book.txt",ios::in);
	if(!fp)
	{
		cout<<"File could not be opened";
		getch();
		return;
	}
	cout<<endl<<endl<<"\t Book List"<<endl<<endl;
	cout<<"======================================================================="<<endl;
	cout<<"Book Number"<<setw(20)<<"Book Name"<<setw(25)<<"Author"<<endl;
	cout<<"=================================================";
	while(fp.read((char*)&bk,sizeof(book)))
	{
		bk.report();
	}
	fp.close();
	getch();
}

void bookissue()
{
	char sn[6],bn[6];
	int found=0,flag=0;
	system("cls");
	cout<<endl<<endl<<"Book Issue";
	cout<<endl<<endl<<"Enter Admission Number of Student";
	cin>>sn;
	fp.open("student.txt",ios::in|ios::out);
	fp1.open("book.txt",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<<endl<<endl<<"Enter the book number";
			cin>>bn;
				while(fp1.read((char*)&bk,sizeof(book) && flag==0))
			
				{
					if(strcmpi(bk.retbno(),bn)==0)
					{
						flag=1;
						st.addtoken();
						st.getstbno(bk.retbno());
						int pos= -1 * sizeof(st);
						fp.seekg(pos,ios::cur);
						fp.write((char*)&st,sizeof(student));
						cout<<endl<<endl<<"Book issued Successfully "<<endl<<endl<<"Note : Write the Book issue Date inn backside of Your Book and return book within 15 days,Fine Rs.1 for each day after 15 days Perios";
											
					}
					
				}
				if(flag==0)
				{
					cout<<"Book Number does not exist";
				}
			}
			else
			{
				cout<<"You have not returned the last book";
			}
		}
		if(found==0)
				{
					cout<<"Student Record does not exist";
				}
				getch();
				fp.close();
				fp1.close();
			
	}
		
}

void bookdeposit()
{
	char sn[6],bn[6];
	int found=0,flag=0,day,fine;
	system("cls");
	cout<<endl<<endl<<"Book Deposit";
	cout<<endl<<endl<<"Enter Admission Number of Student";
	cin>>sn;
	fp.open("student.txt",ios::in|ios::out);
	fp1.open("book.txt",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)
					{
						flag=1;
						bk.showbook();
						cout<<endl<<endl<<"Book Deposited in no. of days";
						cin>>day;
						if(day>15)
						{
							fine=(day-15)*1;
							cout<<endl<<endl<<"Fine has to be deposited Rs."<<fine;	
						}
						st.resettoken();
						int pos= -1 * sizeof(st);
						fp.seekg(pos,ios::cur);
						fp.write((char*)&st,sizeof(student));
						cout<<endl<<endl<<"Book deposited Successfully "<<endl<<endl;
											
					}
					
				}
				if(flag==0)
				{
					cout<<"Book Number does not exist";
				}
			}
			else
			{
				cout<<"No book is issued";
			}
		}
		if(found==0)
				{
					cout<<"Student Record does not exist";
				}
				getch();
				fp.close();
				fp1.close();
			
	}
		
}






void gotoxy(int x, int y)
{
	COORD c;
	c.X = x;
	c.Y = y;
	SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), c);
}
void start()
{

	gotoxy(35, 11);
	cout << "LIBRARY MANAGEMENT SYSYTEM" << endl
		 << endl;
	gotoxy(35, 13);
	cout << "Developer : Nitesh Prasad";
	getch();
}
void adminmenu()
{
	system("cls");
	int ch2;
	cout << endl
		 << endl
		 << endl
		 << "\tAdminstrator Menu";
	cout << endl
		 << endl
		 << endl
		 << "\t1.Create Student Record";
	cout << endl
		 << endl
		 << endl
		 << "\t2.Display All Student Record";
	cout << endl
		 << endl
		 << endl
		 << "\t3.Display Specific Student Record";
	cout << endl
		 << endl
		 << endl
		 << "\t4.Modify Student Record";
	cout << endl
		 << endl
		 << endl
		 << "\t5.Delete Student Record";
	cout << endl
		 << endl
		 << endl
		 << "\t6.Create Book";
	cout << endl
		 << endl
		 << endl
		 << "\t7.Display ALL Book";
	cout << endl
		 << endl
		 << endl
		 << "\t8.Display Specific Book";
	cout << endl
		 << endl
		 << endl
		 << "\t9.Modify Book Record";
	cout << endl
		 << endl
		 << endl
		 << "\t10.Delete Book Record";
	cout << endl
		 << endl
		 << endl
		 << "\t11.Back to Main Menu";
	cout << endl
		 << endl
		 << endl
		 << "\tPlease Enter Your Choice(1-11)";
	cin >> ch2;
	switch (ch2)
	{
	case 1:
			writestudent();
		break;
	case 2:
			displayalls();
		break;
	case 3:
		{
		
		char num[6];
		system("cls");
		cout << endl<< endl<< "\t Please Enter the Admission No.";
		cin >> num;
			displaysps(num);
		}
		break;
	case 4:
			modifystudent();
		break;

	case 5:
		deletestudent();
		break;
	case 6:
		writebook();
		break;

	case 7:
			displayllb();
		break;
	case 8:
	{

		char num[6];
		cin >> num;
		cout<<endl<<endl<<"Please Enter the book no.";
		cin>>num;
		displayspb(num);
	}
	break;
	case 9:
			modifybook();
		break;
	case 10:
		deletebook();
		break;
	case 11:

		return;
	default:
		cout << "Invalid Choice, try again";
	}
	adminmenu();
}

int main()
{
	start();
	char ch;

	do
	{
		system("cls");
		cout << endl<< endl<< "\tMAIN MENU";
		cout << endl<< endl<< "\t1.Book Issue";
		cout << endl<< endl<< "\t2.Book Deposit";
		cout << endl<< endl<< "\t3.Admnistrator Menu";
		cout << endl<< endl<< "\t4.EXIT";
		cout << endl<< endl << "\tPlease Select Your Option between 1-4";
		ch = getche();
		switch (ch)
		{
		case '1':
			bookissue();

		case '2':
			bookdeposit();
			break;
		case '3':
			adminmenu();
			break;
		case '4':
			exit(0);
			break;
		default:
			cout << "Invalid choice, Choose valid option";
		}
	} while (ch != 4);
}