Keil Logo

Identifiers

7.5 Identifiers

Describes implementation-defined aspects of the Arm® C compiler and C library relating to identifiers, as required by the ISO C standard.

Which additional multibyte characters may appear in identifiers and their correspondence to universal character names (6.4.2).

Multibyte characters, whose UTF-8 decoded value falls within one of the ranges in Appendix D of ISO/IEC 9899:2011 are allowed in identifiers and correspond to the universal character name with the short identifier (as specified by ISO/IEC 10646) having the same numeric value.

The dollar character $ is allowed in identifiers.

The number of significant initial characters in an identifier (5.2.4.1, 6.4.2).
There is no limit on the number of significant initial characters in an identifier.
Non-ConfidentialPDF file icon PDF version100067_0612_00_en
Copyright © 2014–2019 Arm Limited or its affiliates. All rights reserved. 
  Arm logo
Important information

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies.

Change Settings

Privacy Policy Update

Arm’s Privacy Policy has been updated. By continuing to use our site, you consent to Arm’s Privacy Policy. Please review our Privacy Policy to learn more about our collection, use and transfers
of your data.