using System;

public class Program

{

    public static void Main()

    {

        DateTime dateLastSmoked = new DateTime(2019, 8, 8);

        DateTime effectiveDate = new DateTime(2020, 8, 31);

        WriteResult(dateLastSmoked, effectiveDate);

        effectiveDate = new DateTime(2020, 9, 1);

        WriteResult(dateLastSmoked, effectiveDate);

        dateLastSmoked = new DateTime(2019, 9, 5);

        WriteResult(dateLastSmoked, effectiveDate);

    }

    private static void WriteResult(DateTime dateLastSmoked, DateTime effectiveDate) {

        bool greaterThan12Months = dateLastSmoked.AddMonths(12) >= effectiveDate;

        Console.WriteLine("Is Smoker = " + greaterThan12Months + " (result of " + dateLastSmoked.AddMonths(12) + " > " + effectiveDate);

    }

}