C++ program to read records of an Object of Class from existing FILE

//program to read record of an employee from an existing file (emp.txt)

#include <iostream>
#include <fstream>
using namespace std;
int main()
{
    int id;
    char name[20],address[20];
    float salary;
    ifstream in("emp.txt");
    cout<<endl<<"Reading from file....";
    in>>id>>name>>address>>salary;
    cout<<endl<<"Displaying record of an employee: ";
    cout<<endl<<"ID: "<<id;
    cout<<endl<<"Name: "<<name;
    cout<<endl<<"Address: "<<address;
    cout<<endl<<"Salary: "<<salary;
    in.close();
    return 0;
}