[C#] Stack 구현하기

using System;
using System.Collections;
using System.Collections.Generic;

namespace tutoring
{
    class MyStack {
     static void Main(string[] args)
        {
            Stack stack = new Stack();
            stack.Push(1);
            stack.Push(2);
            stack.Push(3);
            stack.Push(4);
            stack.Push(5);

            Console.WriteLine("stack.Count: {0}", stack.Count);
            Console.WriteLine();

            while (stack.Count > 0)
                Console.WriteLine(stack.Pop());
            Console.WriteLine();

            Console.WriteLine("stack.Count: {0}", stack.Count);
        }
    }
}