🚀 go-pugleaf

In article mf8@rational.rational.com, "J\ir\tme Desquilbet" <jDesquilbet@Rational.COM> writes:
>
>Reading the STL part of the CD, I understand that the sample "Hello world"
>program becomes:
>
>#include <iostream>
>int main()
>{
>  using namespace std;
>  cout << "Hello, world!" << endl;
>}

That is one way to write it. There are other ways as well. You could put
the "using namespace" at file scope, or just have using-declarations
for the items you need from <iostream>.

>If yes, what about "old" programs written using <iostream.h>? What does the
>above program become if I want to write it without using namespace std?

The ".h" versions of the standard C++ headers are not mentioned in the standard.
Implementors may supply as many other headers as they like, with any sort of
contents. I would expect a vendor to supply a header corresponding to the 
use of <iostream.h> which looked something like this:
	#include <iostream>
	using std::ios;
	using std::istream;
	using std::ostream;
	using std::cout;
	using std::cin;
	... etc

Such a header would allow typical existing programs to continue to compile.
---
Steve Clamage, stephen.clamage@eng.sun.com



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