Variable declarations in header files - static or not?

static const unsigned int VAL = 42;
const unsigned int ANOTHER_VAL = 37;

static int TEST = 0;
void test();

#include <iostream>
#include "test.h"

int main(void) {
    std::cout << &TEST << std::endl;
    test();
}

#include <iostream>
#include "test.h"

void test() {
    std::cout << &TEST << std::endl;
}

const int i = 10;

#include "a.h"

func()
{
   cout << i;
}

#include "a.h"

func1()
{
   cout << i;
}