This code should include a while loop that allows the user to continue entering employees as long as they want to continue:

int main()
{
Real payrate,hours, gross,again;

cout << "Enter the employees hourly pay rate. \n";
cin >> payrate;

cout<< "Enter the total hours worked by employee. \n";
cin >> hours;

while (payrate > 18.25 || payrate < 7.50)
{
    cout << "The valid value for pay rate is in the range. \n";
    cout << " of $7.50 through $ 18.25. \n";
    cout << "Enter a valid value for pay rate. \n";
    cin >> payrate;
}

while (hours > 40 || hours < 0)
{
    cout << "Please enter hours worked between 0 and 40. \n ";
    cin >> hours;
}

gross = payrate * hours;
cout << "The gross pay of the employee is $ " << gross << endl;
}