static variable in #define directive c++ - c++

Question

Is it possible to declare static variable in a #define directive?
// header file
#define TEXT_ENUM
#ifdef TEXT_ENUM
#define TEXT_HANDLING_MACRO \
static const char * TEXT[]; \
static const char * getText( int _enum ) { \
return TEXT[_enum]; \
}
#else
#define TEXT_HANDLING_MACRO
#endif
struct Foo {
TEXT_HANDLING_MACRO
};
// cpp file
#include "foo.h"
const char * Foo::TEXT[] = {
"ONE",
"TWO",
"THREE",
0
};
How compiler will resolve static const char *, when I include this header file in some other file and try to access Foo::TEXT[].

Answer 1

Is it possible to declare static variable in a #define directive?
Yes, it is possible.
How compiler will resolve static const char *, when I include this header file in some other file and try to access Foo::TEXT[].
It's resolved at the linking stage.

Answer 2

You have to figure out what happens through the stages of compilations that the C compiler uses.
Since #define si a pre-compiler directive, everything will be resolved before actually compiling or looking at the code. Pieces of text (code, functions, whatever is included) will be passed on or filtered according to the directive.
All the rest happens after that, like compilation, that will look for global variable declaration, and linking, that will look for the address of those variable.
In you case, if you take your file and compile with a gcc compiler and the -E option (to do just the precompiler stage), you will get:
struct Foo {
static const char * TEXT[]; static const char * getText( int _enum ) { return TEXT[_enum]; }
};
const char * Foo::TEXT[] = {
"ONE",
"TWO",
"THREE",
0
};