/******************************************************/
/* Introduction to Programming                        */
/* By Dr. ANTF                                        */
/* www.antf.net                                       */
/* Copyright 2015                                     */
/*                                                    */
/* C# 309 - Problem 8: Stream of Characters           */
/******************************************************/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DOS
{
    class Program
    {
        static void Main(string[] args)
        {
            int countA = 0, countE = 0;
            char x = '!';

            while(x != '~')
            {
                x = Console.ReadKey().KeyChar;
                if (x == 'a') countA++;
                else if (x == 'e') countE++;
            }

            Console.WriteLine("\n\nYou pressed \'a\' {0} times.", countA);
            Console.WriteLine("You pressed \'e\' {0} times.", countE);

            Console.ReadKey();
        }
    }
}