How many globals?

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C++

Hi,
Let me first explain the code and then I will ask a question.

The main looks as follows:

#include <iostream>
#include "A.h"
#include "B.h"

int _tmain(int argc, _TCHAR* argv[])
{
   B b;

   std::cout << &constA << std::endl;
   b.Print();

   return 0;
}
//-----------------------------

and A.h:

class A
{
public:
   A( int v): val(v) {}
 
private:
   int val;
};

const A constA(10);

//----------------------------

and B.h + B.cpp

file B.h :

class B
{
public:
  void Print();

};

file B.cpp:

#include "B.h"
#include "A.h"
#include <iostream>

void B::Print()
{
   std::cout << &constA << std::endl;
}

//----------------------------

OK. In header file A.h is declared global read-only object constA. It shall be only one such object in application.
But when I prints its address in main two times (one explicitly in cout line and then calling Print method of B class) I got two different addresses. Why does it occur? How to achieve one address of this const in the whole code?