using a static const int in a struct/class
<pre><code>struct A {
    static const int a = 5;

    struct B {
       static const int b = a;
    };

 };

 int main() {
   return A::B::b;
 }
</code></pre>

<p>The above code compiles. However if you go by Effective C++ book by Scott Myers(pg 14);
We need a definition for a in addition to the declaration.
Can anyone explain why this is an exception?</p>
