AcornPublishing_essential-csharp-7e/EssentialCSharp-8.0/src/Chapter02/Listing02.19.AssigningNullToAString.cs
namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter02.Listing02_19
{
    public class Program
    {
        public static void Main()
        {
            int? age;

            //...

            // Clear the value of age
            age = null;

            //...

            System.Console.WriteLine($"The age is: {age}");  
        }
    }
}
