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

namespace DemoStack3
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Demo de Stack");

            Stack<char> miPila = new Stack<char>();

            miPila.Push('a');
            miPila.Push('b');
            miPila.Push('c');

            Console.WriteLine(miPila.Pop());
            Console.WriteLine(miPila.Pop());
            Console.WriteLine(miPila.Pop());

            try
            {
                Console.WriteLine(miPila.Pop());
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }
}