static object of class

[hadisamani1996]

hi all.i am new in C++.
what is goal to determine static object of class?what is diffrnce with usually mode?
for example :
#include

static class* KALA;
int main() {
.
.
.
}
class is a class and KALA now is obejct

thank all.

[coder777]

A static variable is actually a global variable. There is a minor difference: static variables are not linked. I.e. you can use the same name in different compiler units/.cpp with static.

[Niccolo]

@hadisamani1996, KALA is not an object.

It is POINTER to a "class", but it is not an instance, it has no storage. It is also uninitialized.

class T {};

static T KALA();

Now, KALA is an instance, an object.

static T * KALA = nullptr;
Now, KALA is a pointer to a T, but at least it is inialized to nullptr

[jonnin]

wouldnt a static global pointer be zeroed and therefore nulled?

[Niccolo]

@jonnin - it should be, but....

There are situations I've encountered where a dynamic library is loaded unitialized on certain platforms. Indeed, one of the "issues" with dynamic libraries is that objects aren't initialized by calling constructors when in global scope. I would expect such pointer to be zeroed, as you do, yet you must admit, it LOOKS uninitialized, and it's just comforting to see it explicated.