HP C A.06.05 Reference Manual

HP C/HP-UX Implementation Topics
Lexical Elements
Chapter 10242
Lexical Elements
• Identifiers: 255 characters are significant in internal and external names.
• Character Constants: Any character constant of more than one character produces a
warning. The value of an integral character constant containing more than one character
is computed by concatenating the 8-bit ASCII code values of the characters, with the
leftmost character being the most significant. For example, the character constant 'AB'
has the value 256*'A'+'B' = 256*65+66 = 16706. Only the rightmost four characters
participate in the computation.
• The case of alphabetic characters is always significant in external names.
• The execution character set and the source character set are both ASCII.
• Nonprinting characters in character constants and string literals must be represented as
escape sequences.