// var1.h
class A
{
   static int var1;
};

template<typename T> class B : public A
{
   T *pointer;

public:
   T *returnVar()
   {
      if(var1 != 0)
         return pointer;
      else
         return NULL;
   }
};


// var1.cpp
#include "var1.h"
int A::var1 = 0;