Thingking in c++第二版

				//: C02:nl.cpp
				// From Thinking in C++, 2nd Edition
				// Available at http://www.BruceEckel.com
				// (c) Bruce Eckel 2000
				// Copyright notice in Copyright.txt
				// Creating a manipulator
				#include 
				using namespace std;
				
				ostream& nl(ostream& os) {
				  return os 				}
				
				int main() {
				  cout 				       				} ///:~