严重声明：C语言中不存在数组的类型！它仅仅是一个概念！

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笑而不语～～

ISO/IEC 9899:1999
6.2.5 Types
20 Any number of derived types can be constructed from the object, function, and
   incomplete types, as follows:
   — An array type describes a contiguously allocated nonempty set of objects with a
       particular member object type, called the element type.36) Array types are
       characterized by their element type and by the number of elements in the array. An
       array type is said to be derived from its element type, and if its element type is T , the
       array type is sometimes called ‘‘array of T ’’. The construction of an array type from
       an element type is called ‘‘array type derivation’’.
36) Since object types do not include incomplete types, an array of incomplete type cannot be constructed.