using System;

using System.Collections;

using System.Collections.Generic;

public class Program

    {

        public static void Main(string[] args)

        {

            List<EmployeeTax> employeeList = new List<EmployeeTax>();

            employeeList.Add(new MaleEmployeeTax() { Id = 1, Gender = Gender.Male, Name = "MaleEmployee", Salary = 25000, DOB = new DateTime(1991, 10, 10) });

            employeeList.Add(new FemaleEmployeeTax() { Id = 2, Gender = Gender.Female, Name = "FemaleEmployee", Salary = 30000, DOB = new DateTime(1995, 10, 10) });

            employeeList.Add(new SeniorCitizenEmployeeTax() { Id = 3, Gender = Gender.Male, Name = "SenorCitizen", Salary = 60000, DOB = new DateTime(1965, 10, 10) });

            Taxcalculator taxcalculator = new Taxcalculator();

            foreach (var employee in employeeList)

            {

                taxcalculator.CalculateTax(employee);

            }

            Console.ReadLine();

        }

    }

​

    public abstract class EmployeeTax

    {

        public int Id { get; set; }

        public string Name { get; set; }

        public Gender Gender { get; set; }

        public DateTime DOB { get; set; }

        public double Salary { get; set; }

​

        public virtual void CalculateTax()

        {

            Console.WriteLine("General tax slabs");

        }

​

        public override string ToString()

        {

            return String.Concat(Id, " ", Name, " ", Gender, " ", DOB);

        }

    }

​

    public class Taxcalculator

    {

        public void CalculateTax(EmployeeTax employee)

        {

            employee.CalculateTax();

        }

    }

​

    public class FemaleEmployeeTax : EmployeeTax

    {

        public override void CalculateTax()

        {

            Console.WriteLine("Female tax slab");

            Console.WriteLine(this.ToString());

        }

    }

​

    public class MaleEmployeeTax : EmployeeTax

    {

        public override void CalculateTax()

        {

            Console.WriteLine("Male tax slab");

            Console.WriteLine(this.ToString());

        }

    }

​

    public class SeniorCitizenEmployeeTax : EmployeeTax

    {

        public override void CalculateTax()

        {

            Console.WriteLine("SeniorCitizen tax slab");

            Console.WriteLine(this.ToString());

        }

    }

​

    public enum Gender { Male, Female}