How can I modify static variables from outside the class they're
defined in? It doesn't work if I try to access them from a function,
from an instantiated object, or from the class itself. Here's an
example:
MAIN:
#include "test"

int main()
{
Test t;
//All of these give "unresolved external symbol"
t.x = 1;
t.setX(1);
Test::x = 1;
Test::setX(1);
}

TEST:
class Test
{
public:
static int x;
static void setX(int z) { x = z; }
};

Chris Portka wrote:

How can I modify static variables from outside the class they're
defined in? It doesn't work if I try to access them from a function,
from an instantiated object, or from the class itself. Here's an
example:
MAIN:
#include "test"
>

put
int Test::x;
about here.

int main()
{
Test t;
//All of these give "unresolved external symbol"
t.x = 1;
t.setX(1);
Test::x = 1;
Test::setX(1);
}
>
TEST:
class Test
{
public:
static int x;

This is only a declaration. You need a definition too.

static void setX(int z) { x = z; }
};

--
Robert Bauck Hamar
Der er to regler for suksess:
1. Fortell aldri alt du vet.
- Roger H. Lincoln

Where is your constructor destructor defined?

Chris Portka wrote:

How can I modify static variables from outside the class they're
defined in? It doesn't work if I try to access them from a function,
from an instantiated object, or from the class itself. Here's an
example:
MAIN:
#include "test"
>
int main()
{
Test t;
//All of these give "unresolved external symbol"
t.x = 1;
t.setX(1);
Test::x = 1;
Test::setX(1);
}
>
TEST:
class Test
{
public:
static int x;
static void setX(int z) { x = z; }
};

On 5 Dec 2006 16:45:23 -0800 in comp.lang.c++, "Chris Portka"
<chrisportka@gmail.comwrote,

> //All of these give "unresolved external symbol"
> t.x = 1;
> t.setX(1);
> Test::x = 1;

This issue is covered in Marshall Cline's C++ FAQ. See the topic
"[10.11] Why are classes with static data members getting linker
errors?" It is always good to check the FAQ before posting. You can
get the FAQ at:
http://www.parashift.com/c++-faq-lite/