static anus

are variables declared in C headers static even if you don't put static with them?

>>8
No, the linker will allocate the storage only once and make all variables refer to it.

That's not how C works.

>>7

yeap.

Doing

globals.h

int i = 0;

f1.c

#include "globals.h"

int f1() {
  ...
}

f2.c

#include "globals.h"

int f2() {
  ...
}

Is equivalent to:

f1.c

int i = 0;

int f1() {
  ...
}

f2.c

int i = 0;

int f2() {
  ...
}


So there will be an i defined in f1.c and an i defined in f2.c. If you were to compile both f1.c and f2.c, you'd get a linker error, saying that there are two symbols with the same name between f1.o and f2.o.

>>15
extern int i;