Hi David, > I've searched on the net, but I can't find an explanation of what is going on with the above. If you know, please tell me. On the third line, there are these characters: A1@B, The @ character is not a legitimate character for use in an identifier in C. The legitimate characters are: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z a b c d e f g h i j k l m n o p q r s t u v w x y z _ 0 1 2 3 4 5 6 7 8 9 (Numbers cannot be used for the initial character.) With GCC's -fdollars-in-identifiers flag, you can also use: $ But such use is probably discouraged. There may be extensions to C which would allow Unicode characters for use in identifiers. If so, it's not an extension I've used. HTH, --Eljay
