COMPLEXNA

Message        The complex data types are not supported in this
               language mode.  This will be treated as an identifier
               in this compilation.

Description    Support for the complex data types is only available
               in certain language modes.  Support is not present
               when the compiler is in VAX C, K & R (common), or
               strict ANSI89 standard modes.  In these language
               modes _Complex and _Complex_I will be treated as
               identifiers.

User Action    Compile using one of the other compilation modes.