In RH Linux 9, when compiling my C++ program with lines as below:

extern "C" struct S {int x};
static enum E {A=0, B, C};

g++ said:

storage class specified for field `x'
`static' can only be specified for objects and functions

Is this just the implementation of g++? That means I can't use static and extern "C" for those lines of code?

Another question: with GNU g++/gcc compiler and its C++ library, can I use both traditional C++ lib (e.g., classic iostream) and standard C++ lib (e.g., standard iostream) in my C++ program at the same time. Are the both libraries implemented in glibstdc++?

Any help will be appreciated.

Luu Vo.

The line:

static enum E {A=0, B, C};

creates an enum type called E, not an object. Only objects can be static. If what you wanted here was the definition of a static enum object called E, use something like:

static enum EType {A=0, B, C} E;

which creates an enum type called EType and a static object of that type called E.

I am unsure if a similar problem affects your struct line, but try removing the extern "C". In most C/C++ systems I am familiar with, extern "C" applies only to functions. I haven't used it in this one.