c++ read by line

getline

  std::string line;
  std::string _first_name, _last_name;
  long _yearly_salary;
  int _age, _clearance_level;
  while (std::getline(input_file_stream, line))
  {
    std::istringstream iss(line);

    if (!(iss >> _last_name >> _first_name >> _yearly_salary >> _age >> _clearance_level)) { break; } // error

    employees.push_back(EmployeeRecord(_last_name, _first_name, _yearly_salary, _age, _clearance_level));
  }
  input_file_stream.close();