using System; 

​

using System.Collections; 

​

public class Program 

{ 

    public static void Main() 

    { 

        //Create a new stack 

        Stack myStack = new Stack(); 

        //Add items to the stack 

        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);

        //Output the contents of the stack 

        foreach (var item in myStack) 

        { 

            Console.WriteLine(item); 

        } 

        //Count the items in the queue 

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

    } 

}