C Character Constants
A "character constant" is formed by enclosing a single character from the representable character set within single quotation marks (' '). Character constants are used to represent characters in the execution character set.
' c-char-sequence '
L' c-char-sequence '
Any member of the source character set except the single quotation mark ('), backslash (\), or newline character
- simple-escape-sequence: one of
\a \b \f \n \r \t \v
\' \" \\ \?
\ octal-digit octal-digit
\ octal-digit octal-digit octal-digit