incorrect construction after 'defined'
The defined operator was incorrectly terminated, causing a warning or error to appear when the remainder of the line following defined was compiled.
The following example generates this warning and a fatal error:
#if defined( ID1 ) || ( ID2 )
The compiler assumed that the identifier ID1 was the only operand for the defined operator. The rest of the line could not be parsed.
The following avoids this problem:
#if defined( ID1 ) || defined( ID2 )