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9.1.program To Implement Text File

The document describes a C++ program to implement a binary file. It defines an employee class with data members like ID, name, salary etc. and member functions to get, set and display employee data. It then defines functions to create a binary file, display all records, a specific record, update, delete records and print 3 records. The main() function uses a menu to call these functions and write/read to the binary file to manage employee records.

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Sruthisree R M
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73 views18 pages

9.1.program To Implement Text File

The document describes a C++ program to implement a binary file. It defines an employee class with data members like ID, name, salary etc. and member functions to get, set and display employee data. It then defines functions to create a binary file, display all records, a specific record, update, delete records and print 3 records. The main() function uses a menu to call these functions and write/read to the binary file to manage employee records.

Uploaded by

Sruthisree R M
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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9.1.

Program to implement text file


Program:
#include<fstream>
#include<iostream>
#include<string.h>
using namespace std;
void create()
{
int n,i=0;
char A[80];
ofstream f1("Sample.txt");
if(!f1)
{
cout<<"\nERROR!!";
return;
}
cout<<"\nEnter the number of lines";
cin>>n;

do
{
cout<<"\nEnter a line";
cin.getline(A,80);
f1<<A;
f1<<"\n";
i++;
}
while(i<=n);

f1.close();
cout<<"\nFile created!!";
}

void display()
{
char ch[80],A[80];
ifstream f1("Sample.txt");
ifstream f2("New.txt");
cout<<"\nContents of file 1";
while(f1.eof()==0)
{
f1.getline(A,80);
cout<<"\n"<<A;
}
while(f2.eof()==0)
{
f2.getline(ch,80);
cout<<ch;
cout<<"\n";
}
f1.close();
f2.close();
}

int main()
{
int i=0;
char a;
create();
ifstream f1("Sample.txt");
ofstream f2("New.txt");
while(f1.eof()==0)
{
f1.get(a);
if(a==' ')
i++;
else
{
f2<<a;
i++;
}
}

cout<<"\nContents copied!!";
f1.close();
f2.close();
display();
return(0);
}
output::
[4090@localhost ~]$ g++ ex91.cpp
[4090@localhost ~]$ ./a.out

Enter the number of lines 3

Enter a line
Enter a linefirst line

Enter a line second line

Enter a line third line

File created!!
Contents copied!!
Contents of file 1

first line
second line
third line

firstline
secondline
thirdline
9.2.Program to implement binary file
Program:
#include<iostream>
#include<fstream>
#include<stdio.h>
#include<string.h>
using namespace std;
class employee
{
int id;
char name[20],designation[20],quali[20];
float salary;
public:
employee()
{
id=0;
strcpy(name," ");
strcpy(designation," ");
strcpy(quali," ");
salary=0.0;
}
void getdata()
{
cout<<"\nEnter the employee details\nID:";
cin>>id;
cout<<"\nName:";
cin>>name;
cout<<"\nDesignation:";
cin>>designation;
cout<<"\nQualification:";
cin>>quali;
cout<<"\nSalary:";
cin>>salary;
}
void display()
{
cout<<"\nEmployee
details:\nID:"<<id<<"\nName:"<<name<<"\nDesignation:"<<designation<<"\n
Qualification:"<<quali<<"\nSalary:"<<salary;
}
int ret_id()
{
return id;
}
}E;

void create(int n)
{
int i;
ofstream f1("employee.dat");
if(!f1)
{
cout<<"\nError!!!!";
return;
}
for(i=0;i<n;++i)
{
E.getdata();
f1.write((char*)&E,sizeof(E));
}
f1.close();
cout<<"\nFile created!!";
}

int main()
{

int opt,n,id,flag=0;
do
{
cout<<"\n\n1.Create a binary file\n2.Display all employee details\n3.Display a
particular employee's details\n4.Update a record\n5.Delete a record\n6.To print
the three records\n7.Exit\nChoose option:";
cin>>opt;
if(opt==1){
cout<<"\nEnter the number of employee details:";
cin>>n;
create(n);
}
if(opt==2)
{
ifstream f1("employee.dat");
cout<<"\nEmployee details:";
while(f1.read((char*)&E,sizeof(E)))
{
E.display();
}
f1.close();
}

if(opt==3)
{
cout<<"\nEnter the id:";
cin>>id;
ifstream f2("employee.dat");
while(f2.read((char*)&E,sizeof(E)))
{
if(E.ret_id()==id)
{
E.display();
flag=1;
}
}
if(flag==0)
cout<<"\nEmployee not found!!";
f2.close();
}

if(opt==4)
{
cout<<"\nEnter the ID of the record you want to update:";
cin>>id;
ifstream f3("employee.dat");
ofstream f4("temp.dat");
if(!f3 && !f4)
{
cout<<"\nError!!";
break;
}
while(f3.read((char*)&E,sizeof(E)))
{
if(E.ret_id()==id)
{
E.getdata();
f4.write((char*)&E,sizeof(E));
}
else
f4.write((char*)&E,sizeof(E));
}
f3.close();
f4.close();
remove("employee.dat");
rename("temp.dat","employee.dat");
}

if(opt==5)
{
cout<<"\nEnter the ID of the record that you want to delete:";
cin>>id;
ifstream f5("employee.dat");
ofstream f6("temp.dat");
while(f5.read((char*)&E,sizeof(E)))
{
if(E.ret_id()!=id)
{
f6.write((char*)&E,sizeof(E));
}
}
f5.close();
f6.close();
remove("employee.dat");
rename("temp.dat","employee.dat");
}
if(opt==6)
{
int i;
cout<<"\nEnter the ID of the person:";
cin>>id;
ifstream f7("employee.dat");
if(!f7)
{
cout<<"\nERRORR!!!!";
break;
}
while(f7.read((char*)&E,sizeof(E)))
{
if(E.ret_id()==id)
{
for(i=0;i<3;++i)
{
f7.read((char*)&E,sizeof(E));
E.display();
}
}
}
f7.close();
}
}
while(opt!=7);
return(0);

output::
[4090@localhost ~]$ g++ ex92.cpp
[4090@localhost ~]$ ./a.out

1.Create a binary file


2.Display all employee details
3.Display a particular employee's details
4.Update a record
5.Delete a record
6.To print the three records
7.Exit
Choose option:1

Enter the number of employee details:5

Enter the employee details


ID:1

Name:samantika

Designation:ceo

Qualification:ceo

Salary:1000
Enter the employee details
ID:2

Name:sarah

Designation:ceo

Qualification:ceo

Salary:1000

Enter the employee details


ID:3

Name:priya

Designation:ceo

Qualification:cep

Salary:2000

Enter the employee details


ID:4

Name:santosh

Designation:ceo

Qualification:ceo

Salary:2000

Enter the employee details


ID:5

Name:nitish

Designation:ceo

Qualification:ceo

Salary:3000
File created!!

1.Create a binary file


2.Display all employee details
3.Display a particular employee's details
4.Update a record
5.Delete a record
6.To print the three records
7.Exit
Choose option:2

Employee details:
Employee details:
ID:1
Name:samantika
Designation:ceo
Qualification:ceo
Salary:1000
Employee details:
ID:2
Name:sarah
Designation:ceo
Qualification:ceo
Salary:1000
Employee details:
ID:3
Name:priya
Designation:ceo
Qualification:cep
Salary:2000
Employee details:
ID:4
Name:santosh
Designation:ceo
Qualification:ceo
Salary:2000
Employee details:
ID:5
Name:nitish
Designation:ceo
Qualification:ceo
Salary:3000
1.Create a binary file
2.Display all employee details
3.Display a particular employee's details
4.Update a record
5.Delete a record
6.To print the three records
7.Exit
Choose option:3

Enter the id:3

Employee details:
ID:3
Name:priya
Designation:ceo
Qualification:cep
Salary:2000

1.Create a binary file


2.Display all employee details
3.Display a particular employee's details
4.Update a record
5.Delete a record
6.To print the three records
7.Exit
Choose option:4

Enter the ID of the record you want to update:4

Enter the employee details


ID:4

Name:santosh

Designation:clerk

Qualification:becse

Salary:10

1.Create a binary file


2.Display all employee details
3.Display a particular employee's details
4.Update a record
5.Delete a record
6.To print the three records
7.Exit
Choose option:2

Employee details:
Employee details:
ID:1
Name:samantika
Designation:ceo
Qualification:ceo
Salary:1000
Employee details:
ID:2
Name:sarah
Designation:ceo
Qualification:ceo
Salary:1000
Employee details:
ID:3
Name:priya
Designation:ceo
Qualification:cep
Salary:2000
Employee details:
ID:4
Name:santosh
Designation:clerk
Qualification:becse
Salary:10
Employee details:
ID:5
Name:nitish
Designation:ceo
Qualification:ceo
Salary:3000

1.Create a binary file


2.Display all employee details
3.Display a particular employee's details
4.Update a record
5.Delete a record
6.To print the three records
7.Exit
Choose option:5

Enter the ID of the record that you want to delete:4

1.Create a binary file


2.Display all employee details
3.Display a particular employee's details
4.Update a record
5.Delete a record
6.To print the three records
7.Exit
Choose option:2

Employee details:
Employee details:
ID:1
Name:samantika
Designation:ceo
Qualification:ceo
Salary:1000
Employee details:
ID:2
Name:sarah
Designation:ceo
Qualification:ceo
Salary:1000
Employee details:
ID:3
Name:priya
Designation:ceo
Qualification:cep
Salary:2000
Employee details:
ID:5
Name:nitish
Designation:ceo
Qualification:ceo
Salary:3000
1.Create a binary file
2.Display all employee details
3.Display a particular employee's details
4.Update a record
5.Delete a record
6.To print the three records
7.Exit
Choose option:6

Enter the ID of the person:1

Employee details:
ID:2
Name:sarah
Designation:ceo
Qualification:ceo
Salary:1000
Employee details:
ID:3
Name:priya
Designation:ceo
Qualification:cep
Salary:2000
Employee details:
ID:5
Name:nitish
Designation:ceo
Qualification:ceo
Salary:3000

1.Create a binary file


2.Display all employee details
3.Display a particular employee's details
4.Update a record
5.Delete a record
6.To print the three records
7.Exit
Choose option:7
[4090@localhost ~]$ g++ ex10.1.cpp
[4090@localhost ~]$ ./a.out
Enter no. of accounts:3
Account 1
Account number:1
Account name:samantika
Current balance:10000
Creation date:2oct2017
Phone no:999999
Account 2
Account number:2
Account name:samantika
Current balance:20000
Creation date:3sept2017
Phone no:888888
Account 3
Account number:3
Account name:sarah
Current balance:20000
Creation date:5oct2017
Phone no:77777
1.Display
2.Sort
3.Insert
4.Exit
Enter choice:1
Displaying all account details
Position 1
Account number:1
Account name:samantika
Current balance:10000
Creation date:2oct2017
Phone no:999999
Position 2
Account number:2
Account name:samantika
Current balance:20000
Creation date:3sept2017
Phone no:888888
Position 3
Account number:3
Account name:sarah
Current balance:20000
Creation date:5oct2017
Phone no:77777
1.Display
2.Sort
3.Insert
4.Exit
Enter choice:2
Displaying all account details
Position 1
Account number:1
Account name:samantika
Current balance:10000
Creation date:2oct2017
Phone no:999999
Position 2
Account number:2
Account name:samantika
Current balance:20000
Creation date:3sept2017
Phone no:888888
Position 3
Account number:3
Account name:sarah
Current balance:20000
Creation date:5oct2017
Phone no:77777
1.Display
2.Sort
3.Insert
4.Exit
Enter choice:3
Enter the position:2
Enter account details:Account number:44
Account name:nitiiii
Current balance:500000
Creation date:5oct2017
Phone no:88888
Account insertedPosition 1
Account number:1
Account name:samantika
Current balance:10000
Creation date:2oct2017
Phone no:999999
Position 2
Account number:44
Account name:nitiiii
Current balance:500000
Creation date:5oct2017
Phone no:88888
Position 3
Account number:2
Account name:samantika
Current balance:20000
Creation date:3sept2017
Phone no:888888
Position 4
Account number:3
Account name:sarah
Current balance:20000
Creation date:5oct2017
Phone no:77777
1.Display
2.Sort
3.Insert
4.Exit
Enter choice:1
Displaying all account details
Position 1
Account number:1
Account name:samantika
Current balance:10000
Creation date:2oct2017
Phone no:999999
Position 2
Account number:44
Account name:nitish
Current balance:500000
Creation date:5oct2017
Phone no:88888
Position 3
Account number:2
Account name:samantika
Current balance:20000
Creation date:3sept2017
Phone no:888888
Position 4
Account number:3
Account name:sarah
Current balance:20000
Creation date:5oct2017
Phone no:77777
1.Display
2.Sort
3.Insert
4.Exit
Enter choice:4
[4090@localhost ~]$

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