Don’t Worry, Be Happy!

Form.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void label1_Click(object sender, EventArgs e)
        {


        }

        private void button1_Click(object sender, EventArgs e)
        {
           
            if (comboBox1.SelectedItem.ToString() == "male")
            {
                Male x = new Male();
                x.Name = textBox1.Text;
                x._gender = Gender.Male;
                MessageBox.Show(x.Talk());
            }

            else
            {
                Female x = new Female();
                x.Name = textBox1.Text;
                x._gender = Gender.Female;
                MessageBox.Show(x.Talk());
            }
           
        }
    }

}

Male.cs

using System;
using System.Collections.Generic;
using System.Text;

namespace WindowsApplication1
{
    class Male : human
    {
        public override string Talk()
        {
            return base.Talk() + "I am a boy";

        }
    }
}

Female.cs

using System;
using System.Collections.Generic;
using System.Text;

namespace WindowsApplication1
{
    class Female : human
    {
        public override string Talk()
        {
            return base.Talk() + "I am a girl";

        }
    }
}

Human.cs

using System;
using System.Collections.Generic;
using System.Text;
namespace WindowsApplication1
{
    public enum Gender
    {
        Male,
        Female
    }
    public class human
    {
        public human()
        {
            humanCounter++;
        }

        private string name;
        private Gender gender;
        public virtual string Talk()
        {

            return "my name is " + name + " and i am a " + gender + ".nCurrent Number of Instance of human" + humanCounter;

        }

        private static int humanCounter = 0;
        public string Name
        {
            get
            {
                return name;
            }
            set
            {
                name = value;
            }
        }

        public Gender _gender
        {
            get
            {
                return gender;
            }

            set
            {
                gender = value;
            }


        }

    }

}