alt Hacker Newsyou can access it using extern from anywhere:
// a.c
int f( int x ) {
return x + 1;
}
// b.c
extern int f(int x );
int main() {
int y = f(41);
}
"private function" doesn't mean "you can't know about this", it means "you shouldn't rely on this as a stable interface to my code".
Just because you can use the information you have to call a given function, doesn't mean you aren't violating an interface.