Christensen Tom,
On Wednesday October 09, 2002 03:19, Christensen Tom wrote:
> Ok,
> I've been using Linux for about 1 year now, and 1 thing that has always
> worked right out of the box is the gcc compiler... until now.
> installed redhat 8.0 and it won't compile c++ programs...
> not even hello world
>
> #include <iostream>
>
> int main() {
> cout << "Hello World\n";
> return 0;
> }
>
> when I compile that it says "undeclared function cout".
> if I include iostream.h, it compiles successfully but complains because
> iostream.h is deprecated. What gives? why's it broken? I've got iostream
> in my usr/include/c++/3.2 directory it should work, but it doesn't.
It's not broken, it's been fixed. ;)
The 3.2 version of GCC is VERY standards compliant and requires you to be as
well. This especially means that namespaces are very important. This is a
frequently overlooked part of the standard and means there is a ton of
"broken" code, including the snippet above.
You have two choices that will stop all your errors (and give you better
code)...
Sample 1 :
#include <iostream>
using namespace std;
int main ()
{
cout << "Hello World\n";
return 0;
}
or Sample 2 :
#include <iostream>
int main ()
{
std::cout << "Hello World\n";
return 0;
}
When to use which is up to your needs.
--
Brian Ashe CTO
Dee-Web Software Services, LLC. [EMAIL PROTECTED]
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