关于转义字符（Escape character）

1.八进制转义序列     '\000'   ~   '\377' 
2.Unicode转义字符   '\u0000' ~  '\uffff' 
3.字符转义：　 
　  \a 响铃(BEL)     007 
　　\b 退格(BS)      008 
　　\f 换页(FF)      012 
　　\n 换行(LF)      010 
　　\r 回车(CR)      013 
　　\t 水平制表(HT)   009 
　　\v 垂直制表(VT)   011 
　　\\ 反斜杠         092 
　　\? 问号字符       063 
　　\' 单引号字符     039 
　　\" 双引号字符     034 
　　\0 空字符(NULL)   000 
Single Characters



For this Use this Setting x to: Printing x will yield:
' \' "Don\'t do that" Don't do that
" \" "She said \"hi\"" She said "hi"
\ \\ "Backslash: \\" Backslash: \
[newline] \n "1\n2" 1
2
[horizontal tab] \t "1\t2" 1 2
[backspace] \b "12\b3" 13
[16 bit unicode] \uxxxx "Katakana a: \u30A1" Katakana a: ァ
[32 bit unicode] \Uxxxxxxxx "Katakana a: \u000030A1" Katakana a: ァ




Unicode escape characters:



For this Use this Setting x to: Printing x will yield:
' \u0027 "Don\u0027t do that" Don't do that
" \u0022 "She said \u0022hi\u0022" She said "hi"
\ \u0008 "Backslash: \u0008" Backslash: \
[newline] \u000a "1\u000a2" 1
2
[horizontal tab] \u0009 "1\u00092" 1 2
[backspace] \u0008 "12\u00083" 13