stuck at defining static pointer and using it

Question

hey there I stuck at defining a static pointer inside one of my class which is pointing to another class here is the schema of what I've done :

#busineslogic.h
class BussinesLogic {

private :
static Samenamespace::otherclass_DataLogic::clsDL *DL;
 };

#busineslogic.cpp
 samenamespace {
 businessnamespace{
 clsBL{

   Samenamespace::businessnamespace::clsBL *Samenamespace::businessnamespace::clsBL::DL;
  }
 }
}

so with above definition I'll get error every time I compile the code , I've tried several other ways to overcome this problem but the face of the errors gonna change not the whole problem.

I want to know how can I access to another class from my class in such a static way I mean something like above example , how should I change my code ? or should add something extra?

Answer 1

// header:
#include <other/b.hpp>

namespace example {
struct A {
  static other::B* name;
};
}


// implementation: (.cpp)
namespace example {
other::B* A::name;
}

Edit: With the cleanup of the question, it looks like B and A are in the same namespace, which would simplify the example:

// header:
#include <example/b.hpp>

namespace example {
struct A {
  static B* name;
};
}


// implementation: (.cpp)
namespace example {
B* A::name;
}