// <summary>
/// Add a nanny to the nanny list
/// </summary>
/// <param name="n"> The nanny you want to add to the nanny list </param>
public void AddNanny(Nanny n)
{
if (DateTime.Today < n.Birthdate.AddYears(18))
{
throw new Exception("A nanny must be age 18 and over");
}
dal.AddNanny(n);
}
