using System;   

using System.Collections;

        public class Program 

        { 

            public static void Main() 

            { 

                Stack myStack = new Stack(); 

                //Add items to the stack 

                myStack.Push(2); 

                myStack.Push(4);

                myStack.Pop();

                myStack.Pop();

                myStack.Push(1);

                myStack.Push(11);

                myStack.Push(22);

                myStack.Push(22);

                myStack.Push(4);

                myStack.Push(45);

                myStack.Push(22);

                myStack.Push(2);

                myStack.Push(99);

                foreach(var item in myStack) 

                { 

                    Console.WriteLine(item); 

                } 

                Console.WriteLine("Number of elements in Stack: {0}", myStack.Count); 

    }

}