在類定義中寫下 static const int size = 100;對(duì)不對(duì)呀？

whyglinux

先貼上一段關(guān)于這個(gè)問(wèn)題的 C++ 標(biāo)準(zhǔn)的原文，等有時(shí)間了再發(fā)表自己對(duì)此的看法。

If a 'static' data member is of 'const' integral or 'const' enumeral type,
  its declaration in the class definition can specify a 'constant-initializer'
  which shall be an integral constant expression (5.19).  In that case, the
  member can appear in integral constant expressions.  The member shall still
  be defined in a namespace scope if it is used in the program and the
  namespace scope definition shall not contain an 'initializer'.