Problem 15.*Age after 10 Years

/*Problem 15.*Age after 10 Years
Write a program to read your birthday from the console 
and print how old you are now and how old you will be after 10 years.*/

using System;
class AgeAfter10Years
{
    static void Main()
    {
        Console.WriteLine("Enter your birthday in format yyyy.mm.dd:");
        DateTime birthDay = DateTime.Parse(Console.ReadLine());

        DateTime today = DateTime.Today;
        int age = today.Year - birthDay.Year;
        int birthMonth = birthDay.Month;
        int birthD = birthDay.Day;
        int todayMonth = today.Month;
        int todayDay = today.Day;

        if (today < birthDay.AddYears(age)) age--;

        Console.WriteLine("Now you are {0} years old.", age);
        Console.WriteLine("After 10 years ago you will be {0}", age + 10);
    }
}