public int promoteEmployee(EmployeeInformation employee, string ans)
        {
            var oldRating = employee.Rating;
            int newRating;

            if (ans == "pr" || ans == "p")
            {
                newRating = oldRating + 1;
                return(newRating);
            }
            else
            {
                if (oldRating > 0)
                {
                    newRating = oldRating - 1;
                    return(newRating);
                }
                else
                {
                    return(oldRating);
                }
            }
        }