The char datatype

  • Thread starter Thread starter Tony Johansson
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Tony Johansson

Hello!

A char represents a singe 16 bits (Unicode) character.

Assume that a chines want to write a chinese character in a char datatype
that doesn't fit in 16 bit what happens then.

//Tony
 
A char represents a singe 16 bits (Unicode) character.

Assume that a chines want to write a chinese character in a char datatype
that doesn't fit in 16 bit what happens then.
Click to expand...

It gets encoded in 2 chars.

Arne
 
Felix Palmen said:
* Tony Johansson said:
A char represents a singe 16 bits (Unicode) character.

Assume that a chines want to write a chinese character in a char datatype
that doesn't fit in 16 bit what happens then.
Click to expand...

.NET uses the UTF-16 encoding by default. This is different from UCS-2
in that it allows multi-word sequences (just like UTF-8 allows
multi-byte sequences), so it's possible to represent ANY unicode
character in a .NET string (but of course, not necessarily in a single
character).

Regards,
Felix

--
Felix Palmen (Zirias) + [PGP] Felix Palmen <[email protected]>
web: http://palmen-it.de/ | http://palmen-it.de/pub.txt
my open source projects: | Fingerprint: ED9B 62D0 BE39 32F9 2488
http://palmen-it.de/?pg=pro + 5D0C 8177 9D80 5ECF F683
Click to expand...

But according to the definition for Unicode can some character be encoded in
more then 16 bits what would
then happen for a char that only use 16 bits.

If every character in the whole would fits into 16 bits why does the
definiion for Unicode use more then 16 bits fpr some character ?

//Tony
 
But according to the definition for Unicode can some character be encoded in
more then 16 bits what would
then happen for a char that only use 16 bits.

If every character in the whole would fits into 16 bits why does the
definiion for Unicode use more then 16 bits fpr some character ?
Click to expand...

Not all code points can be in 16 bits.

Those that require more than 16 bits will be stored in
two C# chars.

Arne
 
* Tony Johansson said:
But according to the definition for Unicode can some character be encoded in
more then 16 bits what would
then happen for a char that only use 16 bits.
Click to expand...

Google: UTF-8, UTF-16, multibyte-sequence, ...

A char is a char and will always be 16 bit in .NET. You need a string
for UTF-16 to work properly.
 
Hallo, Tony,

Tony Johansson said:
A char represents a singe 16 bits (Unicode) character.

Assume that a chines want to write a chinese character in a char datatype
that doesn't fit in 16 bit what happens then.
Click to expand...

Arne and Felix already explained it in brief,
http://en.wikipedia.org/wiki/Utf-16 contains an in-depth explanation.


Gruss,
Markus
 
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