using System;

public class Program

{

    private static void Vowel_Name_Start(string[] Names_Array)

        {

                       for (int i = 0; i < Names_Array.Length; i++)

            {

                if (Names_Array[i][0] == 'a' || Names_Array[i][0] == 'e' || Names_Array[i][0] == 'i' || Names_Array[i][0] == 'u' || Names_Array[i][0] == 'o')

                {

                    Console.WriteLine(Names_Array[i]);

                }

                else

                {

                    if (Names_Array[i][0] == 'A' || Names_Array[i][0] == 'E' || Names_Array[i][0] == 'I' || Names_Array[i][0] == 'U' || Names_Array[i][0] == 'O')

                    {

                        Console.WriteLine(Names_Array[i]);

                    }

                }

            }

        }

    public static void Main()

    {

         string[] Names_Array_1 = new string[] { "qamar", "hasan", "arefa", "mahmod", "essam" };

         string[] Names_Array_2 = new string[] { "Qamar", "Hasan", "Arefa", "Mahmod", "Essam" };

        Console.WriteLine("Names that begin with vowel letter :");

            Vowel_Name_Start(Names_Array_1);

            Console.WriteLine();

            Console.WriteLine();

            Console.WriteLine("_____________________________________________________");

            Console.WriteLine("Names that begin with vowel letter :");

            Vowel_Name_Start(Names_Array_2);

    }

}