gistfile1.txt

DateTime birthDay; // Declaring variable 'birthDay' of type 'DateTime'
if (DateTime.TryParse(Console.ReadLine(), out birthDay)) // Getting birthdate and initializing it to 'birthDay'
{
    DateTime today = DateTime.Today; // Getting the current date
    int age = today.Year - birthDay.Year; //Getting the age
    if (birthDay > today.AddYears(-age)) age--; // Checking for accuracy of the age
    Console.WriteLine(age); // Displaying the current age
    Console.WriteLine(age + 10); // Displaying the age after 10 years
}
else
{
    Console.WriteLine("Please enter the birthday in proper format (e.g. dd.mm.yyyy)");
}