Computed Values in Preprocessor

[Joe Buck]

You mistakenly believe that gcc@gcc.gnu.org is a forum for beginner
questions, but this appears to be nabble.com's fault.

On Thu, Sep 29, 2005 at 12:30:44PM -0700, aetherane (sent by Nabble.com) wrote:

> I have a constant defined, lets call it A:
> #define A 1
> I want to have another constant defined called be such that B=A+2 so you could do:
> #define B A+2
> 
> The issue is that I need B to be computed as the value of A+2, not as "A+2" which will be directly plugged into code where ever B is referenced. Is there any way to define a token as the combined value of numbers?

No.  C doesn't et you do that.

> Sent from the gcc - General forum at Nabble.com:
> http://www.nabble.com/Computed-Values-in-Preprocessor-t359703.html#a996023

nabble.com is apparently calling this mailing list "the gcc - General
forum", which is wrong.  It is only for developers and testers of the
gcc compiler itself; it is not a place for developers who merely use
gcc to write programs to get their questions answered, except for those
questions that are so technical that only compiler developers can answer.