C++字串中轉義符

Escape Sequence Represents

\a

Bell (alert)

\b

Backspace

\f

Formfeed

\n

New line

\r

Carriage return

\t

Horizontal tab

\v

Vertical tab

\'

Single quotation mark

\"

Double quotation mark

\\

Backslash

\?

Literal question mark

\ooo

ASCII character in octal notation

\xhh

ASCII character in hexadecimal notation

\xhhhh

Unicode character in hexadecimal notation if this escape sequence is used in a wide-character constant or a Unicode string literal. 

For example, WCHAR f = L'\x4e00' or WCHAR b[] = L"The Chinese character for one is \x4e00".

我們可以將任何字元表示為以下形式的通用逸出字元： 

\ooo

這裡 ooo 表示三個八位元字，這三個數字表示字元的數字值。 

同樣也可以用十六進位逸出字元來定義字元： 

\xddd

//當ooo不符合八進位規則時，賦值隨編譯器不同

//'\010000' vs8為字元0(ASCII 0x30),應為取了\ooo 後的第一個0. bcb5為字元\b(ASCII 0x8)，應為取了\010

//'\0999' vs8為字元9,取了\0後的9, bcb5為\0