old version of "programming: principles and practice using c++"

[TimBowl]

I started learning c++ recently, and I just got the book __, but im pretty sure that it is an old version.
anyway I usually have been putting these at the top of my program:
using namespace std;
#include <iostream>

but in this book, it says to put: #include "std_lib_facilities.h" at the top, is this the old way of doing it? should I keep doing what I am doing or change to do what the book says?

Thanks for the help