static void Main(string[] args)
{
var arrayStack = new ArrayStack <int>(5);
Console.WriteLine(arrayStack.Count);
arrayStack.Push(100);
Console.WriteLine(arrayStack.Count);
arrayStack.Push(200);
arrayStack.Push(300);
arrayStack.Push(400);
arrayStack.Push(500);
Console.WriteLine(arrayStack.Peek());
Console.WriteLine(arrayStack.Pop());
Console.WriteLine(arrayStack.Pop());
Console.WriteLine(arrayStack.Peek());
Console.ReadLine();
}
