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#include <iostream>
#include <conio.h>
#include <string.h>
#include <iomanip.h>
#include <fstream>
#include <process.h>
const int TRUE = 1;
const int FALSE = 0;
/************************************************************************************/
struct hotelRecord
{
char room_no[15];
char name[30];
char addr[30];
char phone[12];
};
/************************************************************************************/
struct Linked_List
{
struct hotelRecord hr;
struct Linked_List *next;
};
/************************************************************************************/
typedef struct Linked_List node;
node *head = NULL,*New;
/************************************************************************************/
void initialize(node *N)
{
cout << "\n\t\t\Room_no : ";
cin >> N -> hr.room_no;
cout << "\n\t\t\tName : ";
cin >> N -> hr.name;
cout << "\n\t\t\tAddress : ";
cin >> N -> hr.addr;
cout << "\n\t\t\tPhone No. : ";
cin >> N -> hr.phone;
}
/************************************************************************************/
int empty(node *n)
{
if(strcmp(n -> hr.room_no,"") == 0 && strcmp(n -> hr.name,"") == 0 && strcmp(n -> hr.addr,"") == 0 && strcmp(n -> hr.phone,"") == 0)
return 1;
else
return 0;
}
/************************************************************************************/
void create()
{
New = new node;
strcpy(New -> hr.room_no,"") ;
strcpy(New -> hr.name,"");
strcpy(New -> hr.addr,"");
strcpy(New -> hr.phone,"");
New -> next = NULL;
if(head == NULL)
head = New;
}
/************************************************************************************/
int book_room()
{
ofstream outfile;
outfile.open("Recoed.dat",ios::app);
if(outfile.fail())
{
cout << "Error : Couldn't open file.";
getch();
exit(0);
}
if(head == NULL)
create();
if(head -> next == NULL)
if(empty(head))
{
initialize(New);
outfile.write((char *) &head,sizeof(head));
return 1;
}
char r_ntmp[15];
create();
initialize(New);
strcpy(r_ntmp,New -> hr.room_no);
node *temp = head,*loc = head;
if(strcmpi(r_ntmp,head -> hr.room_no) < 0)
{
New -> next = head;
head = New;
}
else
{
while(temp -> next != NULL)
{
temp = temp -> next;
if(strcmpi(r_ntmp,temp -> hr.room_no) > 0)
loc = temp;
}
New -> next = loc -> next;
loc -> next = New;
}
return 1;
}
/************************************************************************************/
void availability(char *n)
{
node *temp = head;
int found = FALSE;
if(head == NULL)
found = FALSE;
else if(strcmp(n,temp -> hr.room_no) == 0)
found = TRUE;
else
{
while(temp -> next != NULL)
{
temp = temp -> next;
if(strcmp(n,temp -> hr.room_no) == 0)
{
found = TRUE;
break;
}
}
}
if(found)
{
cout << "\n\n\t\t Room No : " << temp -> hr.room_no;
cout << "\n\n\t\t Name : " << temp -> hr.name;
cout << "\n\t\t Address : " << temp -> hr.addr;
cout << "\n\t\t Phone NO. : " << temp -> hr.phone;
}
else
{
cout << "\n\n" << setw(44) << "Record is available";
cout << "\n" << setw(53) << "Press any key to continue...";
}
}
/************************************************************************************/
int remove(char *n)
{
if(head == NULL)
return 0;
node *temp = head,*loc = head;
if(strcmp(n,temp -> hr.room_no) == 0)
{
if(temp -> next == NULL)
{
head = NULL;
delete temp;
}
else
{
head = temp -> next;
delete temp;
}
return 1;
}
else
{
while(temp -> next != NULL)
{
temp = temp -> next;
if(temp == NULL)
return 0;
if(strcmpi(n,temp -> hr.room_no) == 0)
{
if(temp -> next != NULL)
{
temp = loc -> next;
loc -> next = temp -> next;
delete temp;
}
else
loc -> next = NULL;
return 1;
}
loc = loc -> next;
}
}
return 0;
}
/************************************************************************************/
int modify(char *n)
{
node *temp = head;
if(head == NULL)
return 0;
if(strcmpi(n,temp -> hr.room_no) == 0)
{
cout << "\n\n\t\t\t***** Previous Data *****";
cout << "\n\t\t\t Room_No : " << temp -> hr.room_no;
cout << "\n\t\t\t Name : " << temp -> hr.name;
cout << "\n\t\t\t Address : " << temp -> hr.addr;
cout << "\n\t\t\t Phone NO. : " << temp -> hr.phone;
cout << "\n\n\t\t\t***** Enter New Data *****\n";
initialize(head);
return 1;
}
else
{
while(temp -> next != NULL)
{
temp = temp -> next;
if(temp == NULL)
return 0;
if(strcmpi(n,temp -> hr.room_no) == 0)
{
cout << "\n\n\t\t\t***** Previous Data *****";
cout << "\n\t\t\t Room_No : " << temp -> hr.room_no;
cout << "\n\t\t\t Name : " << temp -> hr.name;
cout << "\n\t\t\t Address : " << temp -> hr.addr;
cout << "\n\t\t\t Phone NO. : " << temp -> hr.phone;
cout << "\n\n\t\t\t***** Enter New Data *****\n";
initialize(temp);
return 1;
}
}
}
return 0;
}
/************************************************************************************/
void display()
{
node *temp = head;
if(head == NULL)
{
cout << "\n\n" << setw(46) << "Database is empty";
cout << "\n" << setw(53) << "Press any key to continue...";
return;
}
if(!empty(head))
{
cout << "\n\n\t\t Room No : " << temp -> hr.room_no;
cout << "\n\n\t\t Name : " << temp -> hr.name;
cout << "\n\t\t Address : " << temp -> hr.addr;
cout << "\n\t\t Phone NO. : " << temp -> hr.phone << endl << endl;
}
while(temp -> next != NULL)
{
temp = temp -> next;
cout << "\n\n\t\t Room No : " << temp -> hr.room_no;
cout << "\n\n\t\t Name : " << temp -> hr.name;
cout << "\n\t\t Address : " << temp -> hr.addr;
cout << "\n\t\t Phone NO. : " << temp -> hr.phone << endl ;
}
}
int main()
{
char room_no[15];
do
{
clrscr();
int choice = menu();
int success;
cout << "\n\t\t~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n";
switch(choice)
{
case 1:
success = book_room();
if(success)
cout << "\n\n\n" << setw(51) << "Data Inserted Successfully";
cout << "\n" << setw(53) << "Press any key to continue...";
break;
case 2:
cout << "\n\t\t\tEnter room number : ";
cin >> room_no;
availability(room_no);
break;
case 3:
cout << "\n\t\t\tEnter Name : ";
cin >> room_no;
success = remove(room_no);
if(success)
cout << "\n\n\n" << setw(50) << "Data Deleted Successfully";
else
cout << "\n\n" << setw(48) << "Data Doesn't Exists";
cout << "\n" << setw(53) << "Press any key to continue...";
break;
case 4:
cout << "\n\t\t\tEnter Name : ";
cin >> room_no;
success = modify(room_no);
if(success)
cout << "\n\n\n" << setw(50) << "Data Modified Successfully";
else
cout << "\n\n" << setw(48) << "Data Doesn't Exists";
cout << "\n" << setw(53) << "Press any key to continue...";
break;
case 5:
display();
break;
case 0:
clrscr();
getch();
return 0;
default:
cout << endl << setw(58) << "Please select appropriate option\n";
cout << setw(55) << "Press any key to continue...";
}
getch();
}while(1);
}
/***************************************************** */
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