1Escape HEX in ASCII Character represented
2\a 07 Alert (Beep, Bell) (added in C89)
3\b 08 Backspace
4\e 1B Escape character
5\f 0C Formfeed Page Break
6\n 0A Newline (Line Feed); see notes below
7\r 0D Carriage Return
8\t 09 Horizontal Tab
9\v 0B Vertical Tab
10\\ 5C Backslash
11\' 27 Apostrophe or single quotation mark
12\" 22 Double quotation mark
13\? 3F Question mark (used to avoid trigraphs)
14\nnn any The byte whose numerical value is given by nnn interpreted as an octal number
15\xhh… any The byte whose numerical value is given by hh… interpreted as a hexadecimal number
16\uhhhh none Unicode code point below 10000 hexadecimal
17\Uhhhhhhhh none Unicode code point where h is a hexadecimal digit