Data File Handling With Class (Add, Display, Search, Delete)

#include<fstream.h>

#include<string.h>

#include<stdio.h>

#include<process.h>

#include<conio.h>

class data

{

int id;

char fname[20],lname[20],pno[14];

public:

void add();

void display();

int getId(){ return id;}

char* getfname()

{

return fname;

}

}d;

void storedata();

void readdata();

void searchdata();

void deldata();

void main()

{

char n;

clrscr();

do

{

cout<<endl<<endl<<endl<<"\t\t\t         Main Menu";

cout<<endl<<"\t\t\t============================";

cout<<endl<<"\t\t\t 0. EXIT";

cout<<endl<<"\t\t\t 1. Add Data";

cout<<endl<<"\t\t\t 2. Display Data";

cout<<endl<<"\t\t\t 3. Search Data";

cout<<endl<<"\t\t\t 4. Delete Data";

cout<<endl<<"\t\t\t CHOOSE : ";

n=getche();

switch(n)

{

case '0': exit(0); break;

case '1':

clrscr();

storedata();

clrscr();

textcolor(RED+BLINK);

cprintf("!Data Added");

textcolor(7);

break;

case '2':

clrscr();

readdata();

getch();

clrscr();

break;

case '3':

clrscr();

searchdata();

break;

case '4':

clrscr();

deldata();

break;

default :

clrscr();

textcolor(RED+BLINK);

cprintf("Invalid Input");

textcolor(7);

}

}

while('n'!='0');

}

void data::add()

{

cout<<"Enter Your Id : ";

cin>>id;

cout<<"Enter Your First Name : ";

cin.get();

cin.getline(fname,20);

cout<<"Enter Your Last Name : ";

cin.getline(lname,20);

cout<<"Enter Your Phone No : ";

cin.getline(pno,14);

}

void data::display()

{

cout<<"Id : "<<id;

cout<<endl<<"Name : "<<fname<<" "<<lname;

cout<<endl<<"Phone No : "<<pno;

}

void storedata()

{

ofstream fout;

fout.open("data.dat",ios::binary|ios::app);

d.add();

fout.write((char*)&d,sizeof(d));

fout.close();

}

void readdata()

{

ifstream fin;

fin.open("data.dat");

while(fin.read((char*)&d,sizeof(d)))

{

d.display();

cout<<endl<<endl;

}

fin.close();

}

void searchdata()

{

int fid;

cout<<"Enter Id : ";

cin>>fid;

ifstream fin;

fin.open("data.dat");

while(fin.read((char*)&d,sizeof(d)))

{

if(fid==d.getId())

{

d.display();

cout<<endl<<endl;

}

}

fin.close();

}

void deldata()

{

char ffname[20];

ofstream fout;

cout<<"Enter First Name : ";

cin.getline(ffname,20);

ifstream fin;

fin.open("data.dat");

fout.open("data1.dat");

while(fin.read((char*)&d,sizeof(d)))

{

if(stricmp(ffname,d.getfname())!=0)

{

fout.write((char *)&d,sizeof(d));

}

}

fout.close();

fin.close();

remove("data.dat");

rename("data1.dat","data.dat");

fin.close();

}