6. Write a program to get empid, empname and empsalary of employees of a company and
store the
data on the file "emp.dat"
Answers
Answer:
#include<iostream>
#include<string.h>
#include<stdio.h>
#include<cstdlib>
#include<fstream>
using namespace std;
char empfile[30] = "Employee.txt";
char ITfile[20] = "IT.txt";
char Adminfile[25] = "Admin.txt";
char Prodfile[30] = "Production.txt";
char Salesfile[30] = "Sales.txt";
class emp
{
int empid;
char name[30];
char address[60];
int age;
public:
char dept[15];
void get();
char *getdept()
{
return dept;
}
};
void emp::get()
{
cout<<"\n Enter Employee Id : ";
cin>>empid;
cout<<"\n Enter Name : ";
cin>>name;
cout<<"\n Enter Address : ";
cin>>address;
cout<<"\n Enter Department Name:(Admin/Sales/IT/Production) : ";
cin>>dept;
cout<<"\n Enter Age : ";
cin>>age;
}
void insert()
{
emp e;
ofstream fout; //ofstream is a class, fout is its object. It can be used only to write into the file.
//file is open in the binary, append and nocreate mode.
fout.open("Employee.txt",ios::in | ios::out | ios::binary | ios::app | ios::ate);
if (fout.fail())
{
cout<<"\n Unable to Open the File!!!";
goto err;
}
e.get(); // accepting the details from the user.
fout.write((char *)&e,sizeof(e)); //writing into the file with fout object.
if(fout.tellp()%sizeof(e)==0)
{
cout<<"\n Record Inserted !!!"<<endl;
}
else
{
cout<<"\n Insertion Failed !!!";
goto err;
}
err:
fout.close();
}
void sort() // This function will insert the record according to department in respective file.
{
emp e;
ofstream adm,sal,pro,it; //all files have been created for writing mode.
ifstream fin; // fin object belongs to the ifstream class, it is used to read the file contents only.
adm.open(Adminfile, ios::out | ios::binary | ios::app);
sal.open(Salesfile, ios::out | ios::binary | ios::app);
pro.open(Prodfile, ios::out | ios::binary | ios::app);
it.open(ITfile, ios::out | ios::binary | ios::app);
fin.open(empfile, ios::in | ios::binary);
while(fin.read((char *)&e,sizeof(e))) //reading the file contents till it reaches end of file.
{
if(strcmp(e.getdept(),"Admin")==0)
{
adm.write((char *)&e,sizeof(e));
cout<<"\n Record Inserted into ADMIN File!!!";
}
else if(strcmp(e.getdept(),"Sales")==0)
{
sal.write((char *)&e,sizeof(e));
cout<<"\n Record Inserted into SALES File!!!";
}
else if(strcmp(e.getdept(),"IT")==0)
{
it.write((char *)&e,sizeof(e));
cout<<"\n Record Inserted into IT File!!!";
}
else if(strcmp(e.getdept(),"Production")==0)
{
pro.write((char *)&e,sizeof(e));
cout<<"\n Record Inserted into Production File!!!";
}
else
cout<<"\n Insert Correct Record!!!";
}
fin.close();
adm.close();
sal.close();
it.close();
pro.close();
}
int main()
{
int n;
cout<<"\n Enter No. of Records You Want? : ";
cin>>n;
for(int i=0; i<n; i++)
{
insert();
}
sort();
return 0;
}#include<iostream>
#include<string.h>
#include<stdio.h>
#include<cstdlib>
#include<fstream>
using namespace std;
char empfile[30] = "Employee.txt";
char ITfile[20] = "IT.txt";
char Adminfile[25] = "Admin.txt";
char Prodfile[30] = "Production.txt";
char Salesfile[30] = "Sales.txt";
class emp
{
int empid;
char name[30];
char address[60];
int age;
public:
char dept[15];
void get();
char *getdept()
{
return dept;
}
};
void emp::get()
{
cout<<"\n Enter Employee Id : ";
cin>>empid;
cout<<"\n Enter Name : ";
cin>>name;
cout<<"\n Enter Address : ";
cin>>address;
cout<<"\n Enter Department Name:(Admin/Sales/IT/Production) : ";
cin>>dept;
cout<<"\n Enter Age : ";
cin>>age;
}
void insert()
{
emp e;
ofstream fout; //ofstream is a class, fout is its object. It can be used only to write into the file.
//file is open in the binary, append and nocreate mode.
fout.open("Employee.txt",ios::in | ios::out | ios::binary | ios::app | ios::ate);
if (fout.fail())
{
cout<<"\n Unable to Open the File!!!";
goto err;
}
e.get(); // accepting the details from the user.
fout.write((char *)&e,sizeof(e)); //writing into the file with fout object.
if(fout.tellp()%sizeof(e)==0)
{
cout<<"\n Record Inserted !!!"<<endl;
}
else
{
cout<<"\n Insertion Failed !!!";
goto err;
}
err:
fout.close();
}
void sort() // This function will insert the record according to department in respective file.
{
emp e;
ofstream adm,sal,pro,it; //all files have been created for writing mode.
ifstream fin; // fin object belongs to the ifstream class, it is used to read the file contents only.
adm.open(Adminfile, ios::out | ios::binary | ios::app);
sal.open(Salesfile, ios::out | ios::binary | ios::app);
pro.open(Prodfile, ios::out | ios::binary | ios::app);
it.open(ITfile, ios::out | ios::binary | ios::app);
fin.open(empfile, ios::in | ios::binary);
while(fin.read((char *)&e,sizeof(e))) //reading the file contents till it reaches end of file.
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