friend functions

Umm, my problem is this.
I have a friend function in my string class.
The class declaration in a .h file. The class implementation is in
a .cpp file.
If i define the friend function in the .cpp file i get this error :

<< is not a member of String

I want to overload the '<<' operator to provide printing for my
class. Here's what i'm doing:

Code:

//This is the .h file
#include <iostream.h>

class String
{
public:
      friend ostream& operator<<(ostream&, String&);
      //.....
      //.....
private:
     char*  lpzstr;
};

Then I define the function in the .cpp file like this :

Code:

ostream& operator<<(ostream& o, String& newStr)
{
         return o << newStr.lpzstr;
}

Where should i define friend functions OR what am I doing
wrongly?

Try this:

Code:

ostream& operator<<(ostream& o, String& newString)
{
            o<<newString.lpzstr;
            return o;
}

Well what do you know, my original code works all of a sudden!!

I think it was perhaps my compiler(MSVC++ 6) OR it could be this
Vsual Assist Intellisense upgrade that's messing everything up!

But thanks anyway for your reply, i appreciate it vey much.