title: c++ static won't link
body: <p>Can you help?
  The following code:</p>
  
  <pre><code>class MT
  {
  public:
      static int ms_number;
  
  };
  
  int MT::ms_number;
  </code></pre>
  
  <p>yields:</p>
  
  <pre><code>Error   8   error LNK2005: "public: static int MT::ms_number" 
        (?ms_number@MT@@2HA) already defined in ProjName.obj
  </code></pre>
  
  <p>Why?</p>