From: "Rafal Maj" <maj_rafal AT poczta DOT onet DOT pl>
Newsgroups: comp.os.msdos.djgpp
Subject: static
Date: Thu, 3 May 2001 13:05:26 +0200
Organization: Academic Computer Center CYFRONET AGH
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

(Please, I need to get answer fast - if You can help me)
I didn't use static for long time, so I have totaly forgoten how to use it
:-(

Why this code :
  class cA {
     private : static int a;
     public : static void f();
  };
  void cA::f() { a=3; }
  int main() { }
gives me this error message :
  Creating: a.exe
  Error: a.o: In function `cA::f(void)':
  Error: a.cc(.text+0x5): undefined reference to `cA::a'
  Error: collect2: ld returned 1 exit status
Why after moving body of static function inside class definition everything
is allright :
  class cA {
    private : static int a;
    public : static void f() { a=3; }; // ok
  };
  // void cA::f() { a=3; } - error
  int main() { }

How to write this small example correct ? I must have funciton body outside
of class definition, because I want this class to be splited into .cc and .h

Thanks in advice....