using System;

namespace c
{
     class Program
    {
        static void Main(string[] args)
        {
            Console.Write("Input a lower number:");
            int lower = Convert.ToInt32(Console.ReadLine());
            Console.Write("Input an upper number:");
            int upper = Convert.ToInt32(Console.ReadLine());
            string show="";
            int x = 0;
            string[] numbers=new string[x];
            string a,b,c;
            double aa;
            int j;

            while(lower<upper)
            {
                for (j=lower ; j <=upper;j++)
                {
                    bool prime = true;
                    for (int i = 2; i <= Math.Sqrt(j); i++)
                    {
                        if (j % i == 0){
                            prime = false;
                        }
                    }
                    if (prime == true)
                    {
                        x = x + 1;
                        show = show + j + " ";
                    }
                }
                break;
            }
            numbers = show.Split(' ');
            if (x % 2 != 0)
            {
                a = numbers[(x - 1) / 2];
            }
            else
            {
                b= numbers[(x/2)-1];
                c= numbers[(x /2)];
                aa = (Convert.ToInt32(b) + Convert.ToInt32(c)) / 2;
                a = Convert.ToString(aa);

            }
            Console.WriteLine("There are " + x + " prime numbers, and the median number is " + a);
            Console.WriteLine("--------Prime Numbers-----------");
            Console.WriteLine(show);
            Console.Read();
        }

    }

}