wcstombs() 把宽字符串转换为多字节字符串的问题

[mark521]

宽字符串是什么概念，多字节字符串又是什么概念啊？
看不明白，望各位指点迷津

[FromNoWhere]

Below are from:
http://www-ccs.ucsd.edu/c/charset.html

Multibyte Characters
A source character set or target character set can also contain multibyte characters (sequences of one or more bytes). Each sequence represents a single character in the extended character set. You use multibyte characters to represent large sets of characters, such as Kanji. A multibyte character can be a one-byte sequence that is a character from the basic C character set, an additional one-byte sequence that is implementation defined, or an additional sequence of two or more bytes that is implementation defined.


Wide-Character Encoding
Each character in the extended character set also has an integer representation, called a wide-character encoding. Each extended character has a unique wide-character value. The value zero always corresponds to the null wide character. The type definition wchar_t specifies the integer type that represents wide characters.

You write a wide-character constant as L'mbc', where mbc represents a single multibyte character. You write a wide-character string literal as L"mbs", where mbs represents a sequence of zero or more multibyte characters. The wide-character string literal L"xyz" becomes a sequence of wide-character constants stored in successive bytes of memory, followed by a null wide character:
{L'x', L'y', L'z', L'\0'}

You can also refer to
http://publib.boulder.ibm.com/infocenter/pseries/index.jsp?topic=/com.ibm.vacpp7a.doc/standlib/ref/mbchar.htm
for more information.

[FromNoWhere]

Kanji is the chinese charactor used by Japanese, u can think it as Japanese charactors.

also here is another great page describing ur problem:

http://www.chemie.fu-berlin.de/chemnet/use/info/libc/libc_18.html