C de proje ödevi

using System; 
  using System.Collections.Generic; 
  using System.Linq; 
  using System.Text; 
   
  namespace ConsoleApplication2 
  { 
      class Program 
      { 
          static void Main(string[] args) 
          { 
              int[] sayilar = new int[40]; 
              Random rnd = new Random(); 
              for (int i = 0; i < 20; i++) 
              { 
                  sayilar[i] = rnd.Next(1000); 
              } 
              for (int i = 20; i < 40; i++) 
              { 
                  Console.Write("{0}. Sayıyı Giriniz:  ",i+1); 
                  sayilar[i] = Convert.ToInt32(Console.ReadLine()); 
              } 
              Array.Sort(sayilar); 
              Console.WriteLine(); 
              Console.WriteLine("Sıralı"); 
              Console.WriteLine(); 
              for (int i =0; i < 40; i++) 
              { 
                  Console.WriteLine("{0}. Eleman: {1}", i + 1,sayilar[i]); 
                   
              } 
              Array.Reverse(sayilar); 
              Console.WriteLine(); 
                  Console.WriteLine("Sayılar-Ters"); 
                  Console.WriteLine(); 
               for (int i = 0; i < 40; i++) 
              { 
                  Console.WriteLine("{0}. Eleman: {1}", i + 1,sayilar[i]); 
                   
              } 
               Console.ReadKey(); 
   
          } 
      } 
  }