ISO C Standard Charecter Set

[Sreekanth Makam_1]

Hi folks,

Is '@' a supported character in 'ISO C Standard Character Set'

Please explain me as early as fast...

[Fred Ruffet]

I would say Yes. Can you imagine such a used character set that couldn't handle email addresses ?

Regards,

Fred

[Sreekanth Makam_1]

Hi,

Thanks for replay.

which are the valid places for using '@' character. I mean variable names, constants, character variable values and the like

[Chris Shepherd_1]

You can't use the '@' character in identifiers. If you try the HP compiler complains -

Error 92: "foo.c", line 4 # Character '@' (value 64) was unexpected.
int de@bug = 7;

K&R (Kernighan & Ritchie _ The C programming Language) says 'An identifier is a sequence of letters and digits. the first character must be a letter; the underscore _ counts as a letter. Upper and lower case letters are different. ...'

Which suggests to me only [A-Z][a-z][0-9] & '_' are allowed.

Of course you can use the '@' in String Literals.