Character Constants...
Can be used individually (as a char literal by surrounding the constant with single quotes) or as part of a double-quoted string literal.
Constant Meaning
\' A single quote
\" A double quote
\? A question mark
\\ A backslash
\a Alert sound
\b A backspace
\f A form-feed
\n A newline
\r A carrage-return
\t A tab
\v A vertical tab
\ooo Octal constant (up to three octal digits)
\xHH Hexadecimal constant (one or two hex digits)
\uHHHH Unicode constant (four hex digits)
\UHHHHHHHH Long Unicode constant (eight hex digits)
Constant Meaning
\' A single quote
\" A double quote
\? A question mark
\\ A backslash
\a Alert sound
\b A backspace
\f A form-feed
\n A newline
\r A carrage-return
\t A tab
\v A vertical tab
\ooo Octal constant (up to three octal digits)
\xHH Hexadecimal constant (one or two hex digits)
\uHHHH Unicode constant (four hex digits)
\UHHHHHHHH Long Unicode constant (eight hex digits)