I'm wondering about this definition from Appendix a
of the Jan working paper:

          pp-number:
                  digit
                  . digit
                  pp-number digit
                  pp-number nondigit
                  pp-number e sign
                  pp-number E sign
                  pp-number .

 if pp-number nondigit is a pp-number, then
it seems that 12a12b12c would be a pp-number ...

am I wrong?

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In article D28@cyberspy.com, Rich Paul <linguist@cyberspy.com> writes:
>I'm wondering about this definition from Appendix a
>of the Jan working paper:
>
>          pp-number:
>                  digit
>                  . digit
>                  pp-number digit
>                  pp-number nondigit
>                  pp-number e sign
>                  pp-number E sign
>                  pp-number .
>
> if pp-number nondigit is a pp-number, then
>it seems that 12a12b12c would be a pp-number ...

Yes, it is. But a pp-number itself isn't of much interest. It doesn't
have a type or a value until it is successfully converted into a
token as the last step of preprocessing. That example cannot be
successfully converted. See Chapter 2, Lexical Conventions.

The C and C++ standards differentiate between pp-tokens and tokens.
During the phases of preprocessing, pp-tokens can be altered and
combined in various ways to form actual tokens. A pp-token is just
the smallest unit that is manipulated during preprocessing; a token
is the smallest unit that has meaning after preprocessing.

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Steve Clamage, stephen.clamage@eng.sun.com
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Hello c++ gurus !

In the public avalable version of Draft Standard the term pp-number
is used, but not defined. I am missing something ? Is it the same as
in the ANSI C standard ?

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