using System;
using System.Collections.Generic;
using System.Linq;
//csc Stack_LIFO1.cs
namespace ConsoleApplication1
{
class MainClass
{
public static void Main(string[] args)
{

Stack<string> myStack = new Stack<string>();
Console.WriteLine("LIFO : Last in First Go ");
myStack.Push("Baba");
myStack.Push("Lugo");
myStack.Push("Patrick");
myStack.Push("Jacob");

Print(myStack, ", " );
Console.WriteLine();
myStack.Push("John");
myStack.Push("Peter");
myStack.Push("Sam");
myStack.Push("Jason");
Print(myStack, ", ");
//
Console.ReadLine();

}
static void Print(IEnumerable<string> em,string sep)
{
foreach (Object obj in em)
{
Console.Write( obj.ToString() + sep);
}
}
}
}