this is a program which can be used by students for investograry project in computer science in INDIA. do not copy take it as reference

3. OUTPUT FORMS:-

8. SOURCE CODE:-
#include<iostream.h>
#include<fstream.h>
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<conio.h>
class HOTEL
{
int room_no;
char Name [30];
char Address[50];
char Phone[10];
int days;
int n;
int Total_fare;
char Date_Of_Booking[10];
public:
void menu();
void details();
void search();
void rooms_alloted();

9. void Modify_data();
void Room_Charge();
int check(int);
void modify(int);
void Bill();
void fare()
{
if(n==1)
Total_fare=1600*days;
else if(n==2)
Total_fare=1800*days;
else if (n==3)
Total_fare=1300*days;
else if (n==4)
Total_fare=1500*days;
} };
void HOTEL::menu()
{
int choose;
while(choose!=6)
{
clrscr();
cout<<"ntttt################";
cout<<"ntttt** MAIN MENU **";
cout<<"ntttt################";
cout<<"nnnttt1. Book A Room";
cout<<"nttt2. Data";
cout<<"nttt3. Show all room alloted";
cout<<"nttt4. Edit record";
cout<<"nttt5. Room charge";
cout<<"nttt6.Exit";
cout<<"nnttEnter Your Choice:";
cin>>choose;
switch(choose)
{
case 1:details();
break;
case 2:search();
break;
case 3:rooms_alloted();
break;
case 4: Modify_data();
break;
case 5: Room_Charge();
break;
case 6:break;
default:cout<<"WRONG CHOICE";
cout<<"Press Any Key To Continue";

10. getch();
}
}
}
void HOTEL::details()
{
clrscr();
int r,flag;
ofstream fout("HOTEL.dat",ios::app);
cout<<"Enter Customer Details";
randomize();
r=100+random(400);
room_no=r;
cout<<"Name";
gets(Name);
cout<<"Address";
gets(Address);
cout<<"Phone";
gets(Phone);
cout<<"Date of booking";
gets(Date_Of_Booking);
cout<<"How many days you stay";
cin>>days;
fout.write((char*)this,sizeof(HOTEL));
cout<<"Your room has been booked";
cout<<"n Room no:"<<room_no;
cout<<"Press Any Key To Continue";
getch();
fout.close();
}
void HOTEL:: Room_Charge()
{
cout<<"How many days you stay";
cin>>days;
cout<<"t1.SINGLE BED WITH AC: Rs 1600n";
cout<<"t2.DOUBLE BED WITH AC: Rs 1800n";
cout<<"t3.SINGLE BED WITH FAN: Rs 1300n";
cout<<"t4.DOUBLE BED WITH FAN: Rs 1500n";
cout<<"Enter your choice";
cin>>n;
fare();
Bill();
cout<<"Press Any Key To Continue";
getch();
}
void HOTEL::search()
{
fstream fin("HOTEL.dat",ios::in);
int r,flag;
cout<<"Enter room no.";
cin>>r;

11. while(!fin.eof())
{
fin.read((char*)this,sizeof(HOTEL));
if(room_no==r)
{
clrscr();
cout<<"Customer details";
cout<<"n";
cout<<"nn";
cout<<"Room no:"<<room_no;
cout<<"n";
cout<<"Name:"<<Name;
cout<<"n";
cout<<"Address:"<<Address;
cout<<"n";
cout<<"Phone no:"<<Phone;
flag=1;
break;
}
}
if(flag==0)
cout<<"nn Sorry Room no. not found or vacant...!!!";
cout<<"nn";
cout<<"Press any key to continue...!!!";
getch();
fin.close();
}
void HOTEL::rooms_alloted()
{
clrscr();
ifstream fin("HOTEL.dat",ios::in);
cout<<"nttt List of Room Alloted";
cout<<"nttt-------------------";
cout<<"nnRoom No.tNamettAddressttttPhone No.n";
while(!fin.eof())
{
fin.read((char*)this,sizeof(HOTEL));
cout<<"nn"<<room_no<<"tt"<<Name;
cout<<"tt"<<Address<<"tt"<<Phone;
}
cout<<"nnnntttttt Press any key to continue..!!";
getch();
fin.close();
}
void HOTEL ::Modify_data()
{
clrscr();
int m;
cout<<"t1.MODIFY CUSTOMER RECORD";

12. cout<<"enter room no";
cin>>m;
modify(m);
cout<<"nnnntttttt Press any key to continue..!!";
getch();
}
int HOTEL::check(int r)
{
int flag=0;
ifstream fin("HOTEL.dat",ios::in);
while(!fin.eof())
{
fin.read((char*)this,sizeof(HOTEL));
if(room_no==r)
{
flag=1;
break;
}
}
fin.close();
return(flag);
}
void HOTEL::modify(int r)
{
long pos,flag=0;
fstream file("HOTEL.dat",ios::in|ios::out|ios::binary);
while(!file.eof())
{
pos=file.tellg();
file.read((char*)this,sizeof(HOTEL));
if(room_no==r)
{
cout<<"n";
cout<<"Enter New details:";
cout<<"n----------------";
cout<<"n";
cout<<"Name:";
gets(Name);
cout<<"nAddress:";
gets(Address);
cout<<"Phone no:";
gets(Phone);
file.seekg(pos);
file.write((char*)this,sizeof(HOTEL));
cout<<"nRecord is modified!!";
flag=1;
break;

13. }
}
if(flag==0)
cout<<"n";
else
cout<<"Room no is wrong";
}
void HOTEL::Bill()
{
search();
cout<<"your fare"<<Total_fare;
}
void main()
{
HOTEL h;
clrscr();
cout<<"ntttt*WELCOME TO VILLA*";
cout<<"nnttPress Any Key To Continue";
getch();
h.menu();
}