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Useful in your C strings...

Code    Meaning

\b      backspace
\f      form feed
\n      newline
\r      carriage return
\t      horizontal tab
\"      double quote
\'      single quote
\0      null
\\      backslash
\v      vertical tab
\a      bell
\N      octal constant where N is an octal constant
\xN      hexadecimal constant where N is a hexidecimal constant

This information is taken from Teach Yourself C, 2nd ed. by Herbert Schildt