Hassle with function pointers

I have a weird problem with my function pointer

Code:

---

void (*test)(void)=0;

void SetPointer(int pointer)
{
    test=pointer;
}

---

This won't work :(
I recieve this:

'=' : cannot convert from 'int' to 'void (__cdecl *)(void)'

Use

Code:

---

void SetPointer(void (*ptr)())
{
  test = ptr;
}

---

It works! thx.