using System;

public class Program

{

    public static void Main()

    {

        string NOM;

        int K = 0;

        int A = 0;

        int E = 0;

        int I = 0;

        int O = 0;

        int U = 0;

        string LE;

        Console.Write("Digite una frase: ");

        NOM = Console.ReadLine();

        A = 0;

        E = 0;

        I = 0;

        O = 0;

        U = 0;

        for (K = 1; K < NOM.Length; K++)

        {

            NOM = NOM.ToUpper();

            LE = NOM.Substring(K, 1);

            switch (LE)

            {

                case "A":

                    A = A + 1;

                    break;

                case "E":

                    E = E + 1;

                    break;

                case "I":

                    I = I + 1;

                    break;

                case "O":

                    O = O + 1;

                    break;

                case "U":

                    U = U + 1;

                    break;

            }

        }

        Console.WriteLine("Existen {0} Vocales A", A);

        Console.WriteLine("Existen {0} Vocales E", E);

        Console.WriteLine("Existen {0} Vocales I", I);

        Console.WriteLine("Existen {0} Vocales O", O);

        Console.WriteLine("Existen {0} Vocales U", U);

        Console.WriteLine("Pulse una Tecla:");

        Console.ReadLine();

    }

}