using System;

​

namespace TaxCalculation

{

    public class EmployeeTax

    {

        public static string Name { get; set; }

        public static int Age { get; set; }

        public static string Gender { get; set; }

        public static double Salary { get; set; }

​

        public static void Main(string[] args)

        {

            try

            {

                while (true)

                {

                    Console.WriteLine("Enter your Name: ");

                    Name = Console.ReadLine();

​

                    Console.WriteLine("Enter your date of birth in 'mm/dd/yyyy' format: ");

​

                    DateTime dateTime;

                    DateTime.TryParse(Console.ReadLine(), out dateTime); // Check for valid date and year

​

                    Age = DateTime.Today.Year - dateTime.Year;

​

                    Console.WriteLine("Enter your Gender: ");

                    Gender = Console.ReadLine();

​

                    Console.WriteLine("Enter your Salary: ");

                    Salary = double.Parse(Console.ReadLine()); // Check if the salary is valid

​

                    if (Age <= 18)

                    {

                        Console.WriteLine("Minor dont need to pay taxes.");

                    }

​

                    if (!string.IsNullOrEmpty(Name) && Age > 18 && Salary > 0)

                    {

                        var tax = new TaxCalculator();

                        Console.WriteLine("Tax you need to pay is: " + tax.CalculateTax(Gender, Age, Salary));

                    }

​

                    Console.WriteLine("\nDo you want to continue: (y/n) ");

                    if (Console.ReadLine() == "n")

                    {

                        return;

                    }

                }

            }

            catch (Exception ex)

            {

                Console.WriteLine("EXCEPTION: " + ex.Message, ex.InnerException);

            }

            finally

            {

                //

            }

        }

    }

​

    class TaxCalculator : TaxPayerInfo // INHERITANCE

    {

        // Run Time Polymorphism. 

        public override double CalculateTax(string gender, int age, double salary)

        {

                return base.CalculateTax(gender, age, salary);

        }

    }

}

​

class TaxPayerInfo

    {        

        public virtual double CalculateTax(string gender, int age, double salary)

        {

            try

            {

                gender = gender.ToLower();

​

                if (gender == "male" && age >= 18 )

                {

                    return salary / 30;

                }

​

                if (gender == "female" & age >= 18)

                {

                    return salary / 40;

                }

​

            }

            catch (Exception ex)

            {

                Console.WriteLine("Cannot calculate Tax: " + ex.Message);

            }

            return 0;

        }

    }