extern void test_func_extern (int v);
extern int test_extern;
extern int text_extern_array [4];
  
int test_global;
int test_global_array [4];
int test_global_init = 0;
int test_global_array_init [4] = { 1, 2, 3, 4 };
  
static int test_static;
static int test_static_array [4];
static int test_static_init = 5;
static int test_static_array_init [4] = { 6, 7, 8, 9 };

void test_func (void)
{
  test_func_extern (10);
}

static void test_func_static (void)
{
}

void test_func_args (int a, int b, int c, int d)
{
  test_func_extern (a + b + c + d);
}