6.6 Constants

6.6 Constants

• Numeric

  Decimal	12345
  Unsigned Decimal	12345U	or u
  Long Integer	123456789L	or l
  Unsigned Long Integer	123456789UL	or ul
  Octal	012345	Leading 0
  Hexadecimal	OxA4BC	I like lower case x
  Single Character	'a'
  String, null terminated	"String"
  Floating Point	1234f	or F
  Floating Point	1234.234
  Long Floating Point	.0012L	or l
  Exponential notation	1234.234e-12
  Exponential notation	1e-12	No . required.

• Character
  In single quotes. `a`
  Special sequences:

  \b	Backspace
  \f	Form feed
  \n	Newline
  \r	Carriage return
  \t	Horizontal tab
  \v	Vertical tab
  \\	Backslash
  \?	Question mark
  \'	Single quote
  \"	Double quote
  \ooo	Octal number
  \xhh	Hexadecimal number

• Strings
  Sequence of characters terminated with a '\0'. It is one longer in memory than the number of characters in between the double quotes.

    "Hello, "
    "world" 
    

  and

    "Hello, world"
    

  are equivalent. This is useful for long, multi-line constants.

6.6 Constants