Re: c++, unqualified-id before

disinfo wrote:
> Code conversion.h:
> 
> using namespace std;

Ahem, you haven't included any header that uses anything from namespace
std,
so what is this doing there?

> #include <iostream.h>

If you are learning from a book or any kind of tutorial, you should
definitely dump that book, because it is trying to teach you code in a
dialect that predates the C++ standard, which is almost ten years old. In
other words, the tutorial is for sure not up to date. The standard-conform
equivalent to the above is

  #include <iostream>

> with g++ C.* I recive the following error:

_ALWAYS_ turn on warnings and always make sure you understand them before
you ignore them. For GCC that is with '-Wall'.

Uli