public static void Main(String[] args)
{
Stack s = new Stack();
s.Push(1);
Console.WriteLine("Size of Stack: " + s.Size() + "\tTop : " + s.Top());
s.Push(7);
Console.WriteLine("Size of Stack: " + s.Size() + "\tTop : " + s.Top());
s.Push(9);
Console.WriteLine("Size of Stack: " + s.Size() + "\tTop : " + s.Top());
s.Pop();
Console.WriteLine("Size of Stack: " + s.Size() + "\tTop : " + s.Top());
s.Pop();
Console.WriteLine("Size of Stack: " + s.Size() + "\tTop : " + s.Top());
s.Push(5);
Console.WriteLine("Size of Stack: " + s.Size() + "\tTop : " + s.Top());
/*
* Output :
*
* current size: 4
* 4
* 3
* 2
* current size: 2
*/
}