[Thinine]

I can't seem to get the new gcc3 compiler to work with my C++ programs. However, it does compile my C programs just fine. When I try and compile it reports cout, cin, and endl as undeclared functions. Whats going on?

[smeger]

You might be having a namespace conflict. Try std::cout, std::endl, etc.

Or, bracket your code with 'using namespace std;'

[Thinine]

I guess 10.2 uses iostream.h instead of the plain iostream like I had. Makes changing my files really easy at least.

[smeger]

No, it should be just <iostream>. That's how all of my code is set up, and it works fine.

As a rule of thumb, C++ system headers have no prefix; C headers have '.h'.

[Gul Banana]

Namespaces were introduced into C++ after it began being generally used, although they are a part of the official standard. As a result there are two methods of importing headers from the standard library.

import <iostream> is the standard way, which does not do _any_ namespace declarations, you must do them yourself
import <iostream.h> is the legacy way which automatically adds you to the standard namespace for backwards compatibility

So

Code:
import <iostream>
using namespace std;

is equivalent to

Code:
import <iostream.h>