Answer:
#include <fstream>
#include <iostream>
#define FILE_N "employee.dat"
using namespace std;
class Employee {
private :
int empID;
char empName[100] ;
int salary;
public :
void readEmployeeDetails(){
cout<<" PLEASE SUBMIT EMPLOYEE DETAILS"<<endl;
cout<<"INPUT EMPLOYEE ID : " ;
cin>>empID;
cin.ignore(1);
cout<<"ENTER EMPLOYEE NAME: ";
cin.getline(empName,100);
cout<<"ENTER EMPLOYEE SALARY : ";
cin>>salary;
}
void increasesalary(){
cout<<" Increment Salary"<<endl;
cout<<"ENTER INCREMENT SALARY : ";
int sal;
cin>>sal;
salary=salary + sal;
}
void displayEmployee(){
cout<<"EMP ID: "<<empID<<endl
<<"EMP NAME: "<<empName<<endl
<<"SALARY: "<<salary<<endl;
}
};
int main(){
int options;
LOOP:cout<<"Enter the Options:";
cin>>options;
if(options == 1)
{
Employee emp;
emp.readEmployeeDetails();
fstream file;
file.open(FILE_N,ios::out|ios::binary);
if(!file){
cout<<"There is an Error found while creating file...\n";
return -1;
}
file.write((char*)&emp,sizeof(emp));
file.close();
cout<<"Date has been saved in the file.\n";
goto LOOP;
}
else if(options == 2)
{
Employee emp;
fstream file;
file.open(FILE_N,ios::in|ios::binary);
if(!file){
cout<<"There is an error while opening file...\n";
return -1;
}
if(file.read((char*)&emp,sizeof(emp))){
cout<<endl<<endl;
cout<<"Data being discovered from the file..\n";
emp.displayEmployee();
}
else{
cout<<"There is an error while reading the file...\n";
return -1;
}
goto LOOP;
}
else
{
Employee emp;
emp.increasesalary();
fstream file;
file.open(FILE_N,ios::out|ios::binary);
if(!file){
cout<<"Error found while creating file...\n";
return -1;
}
file.write((char*)&emp,sizeof(emp));
file.close();
cout<<"Date saved inside the file.\n";
goto LOOP;
}
return 0;
}
Explanation:
The above program is in C++. It creates a class, assign it value, and then work on three option.
1. Press 1 to ADD AN EMPLOYEE.
2. Press 2 to DISPLAY FILE DATA.
3. Press 3 to INCREASE EMPLOYEE SALARY.
Rest is as shown in program.
