title: Trailing commas and C++
body: <p>I have read somewhere that the C++ standard does not allow something like <code>enum an_enum { a, b, c, };</code>, while later versions of C (I think from mid-90s) do allow such declarations with trailing commas. If C++ is supposed to have backwards compatibility with C, how come this feature is forbidden? Any special reason?</p>
  
  <p>I also read that such trailing commas are actually good, so that just adds to the confusion.</p>