using System;

public class Program

{

    public static void Main()

    {

        YearsOld1();

        YearsOld2();

    }

        private static void YearsOld1()

    {

        int now = 2023_08_24;

        int dob = 1956_09_24;

        var age  = (now - dob) / 10000;

        Console.WriteLine(age);

    }   

    private static void YearsOld2()

    {

        DateOnly dateOfBirth = new (1956, 9, 24);

        int now = int.Parse(DateTime.Now.ToString("yyyyMMdd"));

        int dob = int.Parse(dateOfBirth.ToString("yyyyMMdd"));

​

        int age = (now - dob) / 10000;

        Console.WriteLine(age);

​

    }

​

​

}