DVDmanagement.txt

#include<iostream.h>
#include<fstream.h>
#include<conio.h>
#include<stdio.h>
class dvd
{
int dvdno;
char title[100];
int rent;
char status;
	public:
		void menu();
		void add();
		void modify();
		void search();
		void displayall();
		int isvalid(int a);
		void changestatus(int b,char st);
		int getdvdno();
		char *gettitle();
		int getrent();
		char getstatus();
};

class member
{
	int memberno;
	char name[50];
	char address[200];
	char mobileno[15];

		public:
			void menu();
			void add();
			void modify();
			void search();
			void displayall();
			int isvalid(int b);
			int getmemberno();
			char * getname();
			char *getaddress();
			char *getmobileno();
};

class transaction
{
int memberno;
int dvdno;
int ddi;
int mmi;
char status; //i or r
int yyyyi;
int ddr;
int mmr;
int yyyyr;
int fine;
	public:
	void issue();
	void retrn();
	void displayall();
	int datediff(int d1,int m1,int y1,int d2,int m2,int y2);
};


int dvd::getdvdno()
{
	return dvdno;
}

char *dvd::gettitle()
{
	return title;
}

int dvd::getrent()
{
	return rent;
}


char dvd::getstatus()
{
	return status;
}

void dvd::menu()
{
	int ch=1;
	while(ch!=5)
	{
		clrscr();
		cout<<"1.add dvd"<<endl;
		cout<<"2.modify dvd"<<endl;
		cout<<"3.search dvd"<<endl;
		cout<<"4.display all dvds"<<endl;
		cout<<"5.exit"<<endl;
		cin>>ch;
		if(ch==1)
		{
			add();
		}
		else if(ch==2)
	       {
			modify();
	       }
	       else if(ch==3)
	       {
			search();
	       }
	       else if(ch==4)
	       {
			displayall();
	       }
		else if(ch==5)
	       {
			return;
	       }
	       else
	       {
			cout<<"invalid choice";
	       }
	}
}
void dvd::add()
{
	clrscr();
	fstream f;
	f.open("dvd.dat",ios::app|ios::binary);
	cout<<"enter dvd number"<<endl;
	cin>>dvdno;
	cout<<"enter title"<<endl;
	cin>>title;
	cout<<"enter renting amount"<<endl;
	cin>>rent;
	status='y';
	f.write((char*)this,sizeof(*this));
	f.close();
}
void dvd::modify()
{
	fstream f1;
	fstream f2;
	f1.open("dvd.dat",ios::in|ios::binary);
	f2.open("temp.dat",ios::out|ios::binary);
	int flag=0;
	int n;
	clrscr();
	cout<<"enter DVD number to be modified";
	cin>>n;
	f1.read((char*)this,sizeof(*this));
	while(!f1.eof())
	{
	if (dvdno!=n)
	{
		f2.write((char*)this,sizeof(*this));
	}
	else
	{
		cout<<"Existing detials are :"<<endl;
		cout<<dvdno<<n<<title<<rent<<endl;
		cout<<"enter new title";
		gets(title);
		cout<<"enter new rent per day";
		cin>>rent;
		f2.write((char*)this,sizeof(*this));
		cout<<"Modification successful";
		flag=1;
	}
		f1.read((char*)this,sizeof(*this));
	}
	f1.close();
	f2.close();
	if(flag==0)
	{
		cout<<"no such record";
		getch();
	}
	remove("dvd.dat");
	rename("temp.dat","dvd.dat");
}

void dvd::search()
{
	int n;
	fstream f;
	f.open("dvd.dat",ios::in|ios::binary);
	int flag=0;
	clrscr();
	cout<<"Enter DVD number to be searched ";
	cin>>n;
	f.read((char*)this,sizeof(*this));
	while(!f.eof())
	{
		if(dvdno==n)
		{
			flag=1;
			cout<<"DVD NO "<<dvdno<<endl;
			cout<<"Title "<<title<<endl;
			cout<<"Rent "<<rent<<endl;
			cout<<"Availability "<<status<<endl;
			getch();
			break;
		}
		f.read((char*)this,sizeof(*this));
	}
	if(flag==0)
	{
		cout<<"record not found";
	}
	f.close();
}

void dvd::displayall()
{
	fstream f;
	clrscr();
	f.open("dvd.dat",ios::in|ios::binary);
	f.read((char*)this,sizeof(*this));
	while(!f.eof())
	{
		cout<<dvdno<<" "<<title<<" "<<rent<<" "<<status<<endl;
		f.read((char*)this,sizeof(*this));
	}
	f.close();
	getch();
}

void dvd::changestatus(int b,char st)
{
	fstream f;
	f.open("dvd.dat",ios::in|ios::out|ios::binary);
	f.read((char*)this,sizeof(*this));
	while(!f.eof())
	{
		if(dvdno==b)
		{
			f.seekp(f.tellg()-sizeof(*this),ios::beg);
			status=st;
			f.write((char*)this,sizeof(*this));
			f.close();
			return;
		}
		f.read((char*)this,sizeof(*this));
	}
	f.close();
}

int dvd::isvalid(int a)
{
	fstream f;
	f.open("dvd.dat",ios::in|ios::binary);
	f.read((char*)this,sizeof(*this));
	while(!f.eof())
	{
		if(dvdno==a)
		{
			f.close();
			return 1;
		}
		f.read((char*)this,sizeof(*this));
	}
	f.close();
	return 0;

}

int member::getmemberno()
{
	return memberno;
}

char *member::getname()
{
	return name;
}

char *member::getaddress()
{
	return address;
}
char *member::getmobileno()
{
	return mobileno;
}


void member::add()
{
	clrscr();
	fstream f;
	f.open("member.dat",ios::app|ios::binary);
	cout<<"enter member number"<<endl;
	cin>>memberno;
	cout<<"enter name"<<endl;
	gets(name);
	cout<<"enter address "<<endl;
	gets(address);
	cout<<"enter mobile number"<<endl;
	cin>>mobileno;
	f.write((char*)this,sizeof(*this));
	f.close();
}
void member::modify()
{
	clrscr();
	fstream f1;
	fstream f2;
	f1.open("member.dat",ios::in|ios::binary);
	f2.open("temp.dat",ios::out|ios::binary);
	int flag=0;
	int n;
	cout<<"enter member number to be modified";
	cin>>n;
	f1.read((char*)this,sizeof(*this));
	while(!f1.eof())
	{
	if (memberno!=n)
	{
		f2.write((char*)this,sizeof(*this));
	}
	else
	{
		cout<<"Existing detials are :"<<endl;
		cout<<memberno<<" "<<name<<" "<<address<<" "<<mobileno<<endl;
		cout<<"enter new name";
		gets(name);
		cout<<"enter new address";
		gets(address);
		cout<<"enter new mobile number";
		cin>>mobileno;
		f2.write((char*)this,sizeof(*this));
		cout<<"Modification successful";
		flag=1;
	}
		f1.read((char*)this,sizeof(*this));
	}
	f1.close();
	f2.close();
	if(flag==0)
	{
		cout<<"no such record";
		getch();
	}
	remove("member.dat");
	rename("temp.dat","member.dat");
}

void member::search()
{
	clrscr();
	int n;
	fstream f;
	f.open("member.dat",ios::in|ios::binary);
	int flag=0;
	cout<<"Enter member number to be searched ";
	cin>>n;
	f.read((char*)this,sizeof(*this));
	while(!f.eof())
	{
		if(memberno==n)
		{
			flag=1;
			cout<<"Member number "<<memberno<<endl;
			cout<<"Name "<<name<<endl;
			cout<<"Address "<<address;
			cout<<"Mobile "<<mobileno<<endl;
			getch();
			break;
		}
	f.read((char*)this,sizeof(*this));
	}
	if(flag==0)
	{
		cout<<"record not found";
	}
	f.close();
}

void member::displayall()
{
	fstream f;
	clrscr();
	f.open("member.dat",ios::in|ios::binary);
	f.read((char*)this,sizeof(*this));
	while(!f.eof())
	{
		cout<<memberno<<" "<<name<<" "<<address<<" "<<mobileno<<endl;
		f.read((char*)this,sizeof(*this));
	}
	f.close();
	getch();
}

void member::menu()
{
	int ch=1;
	while(ch!=5)
	{
		clrscr();
		cout<<"1.add member"<<endl;
		cout<<"2.modify member"<<endl;
		cout<<"3.search member"<<endl;
		cout<<"4.display all members"<<endl;
		cout<<"5.exit"<<endl;
		cin>>ch;
		if(ch==1)
		{
			add();
		}
		else if(ch==2)
	       {
			modify();
	       }
	       else if(ch==3)
	       {
			search();
	       }
	       else if(ch==4)
	       {
			displayall();
	       }
		else if(ch==5)
	       {
			return;
	       }
	       else
	       {
			cout<<"invalid choice";
	       }
	}
}

int member::isvalid(int b)
{
	fstream f;
	f.open("member.dat",ios::in|ios::binary);
	f.read((char*)this,sizeof(*this));
	while(!f.eof())
	{
		if(memberno==b)
		{
			f.close();
			return 1;
		}
		f.read((char*)this,sizeof(*this));
	}
	f.close();
	return 0;

}

void transaction::issue()
{
	clrscr();
	int a;
	clrscr();
	cout<<"enter member id ";
	cin>>a;
	member m;
	if(m.isvalid(a)==1)
	{
		cout<<"name of the member"<<m.getname()<<endl;
		cout<<"address of the member"<<m.getaddress()<<endl;
		cout<<"mobile number"<<m.getmobileno()<<endl;
	}
	else
	{
		cout<<"member id not valid";
		getch();
		return ;
	}
	cout<<"enter dvd id ";
	int b;
	cin>>b;
	dvd d;
	if(d.isvalid(b)==1 && d.getstatus()=='y')
	{
		cout<<"title of the dvd "<<d.gettitle()<<endl;
		cout<<"rent of the dvd "<<d.getrent()<<endl;
		cout<<"status "<<d.getstatus()<<endl;
       }
       else
       {
		cout<<"invalid dvd id/dvd not available. press any key to abort";
		getch();
		return;
       }
       fstream f;
       f.open("transaction.dat",ios::app|ios::binary);
       memberno=a;
       dvdno=b;
       cout<<"enter issue date DD MM YYYY";
       cin>>ddi>>mmi>>yyyyi;
       status='i';
       ddr=mmr=yyyyr=fine=0;
       f.write((char*)this,sizeof(*this));
       f.close();
       d.changestatus(b,'n');
       cout<<endl<<"dvd issued";
       getch();
}

void transaction::retrn()
{
	clrscr();
	int a;
	cout<<"enter member id ";
	cin>>a;
	member m;
	if(m.isvalid(a)==1)
	{
		cout<<"name of the member "<<m.getname()<<endl;
		cout<<"address of the member "<<m.getaddress()<<endl;
		cout<<"mobile number "<<m.getmobileno()<<endl;
	}
	else
	{
		cout<<"member id not valid";
		getch();
		return ;
	}
	cout<<"enter dvd id ";
	int b;
	cin>>b;
	dvd d;
	if(d.isvalid(b)==1)
	{
		cout<<"title of dvd "<<d.gettitle()<<endl;
		cout<<"rent of dvd "<<d.getrent()<<endl;
		cout<<"status of dvd "<<d.getstatus()<<endl;
       }
       else
       {
		cout<<"invalid dvd no./dvd unavailable. press any key to abort";
		getch();
		return;
       }
	fstream f;
	f.open("transaction.dat",ios::in|ios::out|ios::binary);
	f.read((char*)this,sizeof(*this));
	while(!f.eof())
	{
		if(memberno==a && dvdno==b && status=='i')
		{
			f.seekp(f.tellg()-sizeof(*this));
			status='r';
			cout<<"enter date of return DD MM YYYY ";
			cin>>ddr>>mmr>>yyyyr;
			int days=datediff(ddi,mmi,yyyyi,ddr,mmr,yyyyr);
			if(days>1)
			{
				fine=(days-1)*50;
				cout<<"Fine calculated for "<<days-1<<" days = Rs. "<<fine<<endl;
			}
			else
			{
				fine=0;
			}
			f.write((char*)this,sizeof(*this));
			d.changestatus(b,'y');
			cout<<"DVD returned";
			getch();
			break;
		}
		f.read((char*)this,sizeof(*this));
	}
	f.close();
}

void transaction::displayall()
{
	clrscr();
	fstream f;
	f.open("transaction.dat",ios::in|ios::binary);
	f.read((char*)this,sizeof(*this));
	int flag=0;
	while(!f.eof())
	{
		flag=1;
		cout<<memberno<<" "<<dvdno<<" "<<ddi<<"/"<<mmi<<"/"<<yyyyi<<" "<<status<<" "<<ddr<<"/"<<mmr<<"/"<<yyyyr<<" "<<fine<<endl;
		f.read((char*)this,sizeof(*this));
	}
	if(flag==0)
	{
		cout<<"Transactions not found";
	}
	getch();
	f.close();
}


int transaction::datediff(int d1,int m1,int y1,int d2,int m2,int y2)
{
	int count=0;
	while(1)
	{
		if(d1==d2 && m1==m2 && y1==y2)
			break;
		d1++;
		if( m1==1||m1==3||m1==5||m1==7||m1==8||m1==10||m1==12)
		{
			if(d1>31)
			{
				d1=1;
				m1++;
				if(m1>12)
				{
					m1=1;
					y1++;
				}
			}
		}
		else if(m1==4||m1==6||m1==9||m1==11)
		 {
			if(d1>30)
			{
				d1=1;
				m1++;
			}
		}
		else if(m1==2)
		{
			if(y1%4==0)
		       {
				 if(d1>29)
				 {
					 d1=1;
					 m1++;
				 }
			}
			else
			{
				if(d1>28)
				{
					d1=1;
					m1++;
				}
			}
		}
		count++;
	   }
	   return count+1;
}



void main()
{
	int ch=1;
	member m;
	dvd d;
	transaction t;
	while(ch!=6)
	{
		clrscr();
		cout<<"1 Member Management"<<endl;
		cout<<"2 DVD Management"<<endl;
		cout<<"3 Issue a DVD"<<endl;
		cout<<"4 Return a DVD"<<endl;
		cout<<"5 Display issue register"<<endl;
		cout<<"6 Exit"<<endl;
		cin>>ch;
		if(ch==1)
			m.menu();
		else if(ch==2
			d.menu();
		else if(ch==3)
			t.issue();
		else if(ch==4)
			t.retrn();
		else if(ch==5)
			t.displayall();
		else
			return;
	}
}