What will be the output of the following C# code?

 static void Main(string[] args)
 {
     int i;
     i = 0;
     while (i++ < 5)
     {
         Console.WriteLine(i);
     }
     Console.WriteLine("\n");
     i = 0;
     while ( ++i < 5)
    {
        Console.WriteLine(i);
    }
    Console.ReadLine();
}