HP C/iX Reference Manual (31506-90011)

Appendix B 199
Syntax Summary
Lexical Grammar
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dollar-sign ::= the $ character
Constants
constant ::=
floating-constant
integer-constant
enumeration-constant
character-constant
floating-constant ::=
fractional-constant [exponent-part] [floating-suffix]
digit-sequence exponent-part [floating-suffix]
fractional-constant ::=
[digit-sequence] . digit-sequence
digit-sequence .
exponent-part ::=
e [sign] digit-sequence
E [sign] digit-sequence
sign ::=
+
-
digit-sequence ::=
digit
digit-sequence digit
floating-suffix ::=
flFL
integer-constant ::=
decimal-constant [integer-suffix]
octal-constant [integer-suffix]
hexadecimal-constant [integer-suffix]
decimal-constant ::=
nonzero-digit
decimal-constant digit
octal-constant ::=
0
octal-constant octal-digit
hexadecimal-constant ::=
0x hexadecimal-digit
0X hexadecimal-digit
hexadecimal-constant hexadecimal-digit