widechar is a generic name for character sets wider than ASCII
The term widechar is a generic name for character sets wider than 8 bits. Generally this means some (unspecified) 16 or 32 bit Unicode encoding.
Questions tagged [widechar]
203 questions
45
votes
8 answers
Why does the Java char primitive take up 2 bytes of memory?
Is there any reason why Java char primitive data type is 2 bytes unlike C which is 1 byte?
Thanks
realnumber
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40
votes
2 answers
What is a "wide character string" in C language?
I came across this in the book:
wscanf(L"%lf", &variable);
where the first parameter is of type of wchar_t *.
This s different from scanf("%lf", &variable); where the first parameter is of type char *.
So what is the difference than. I have never…
quantum231
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39
votes
4 answers
Windows API: ANSI and Wide-Character Strings -- Is it UTF8 or ASCII? UTF-16 or UCS-2 LE?
I'm not quite pro with encodings, but here's what I think I know (though it may be wrong):
ASCII is a 7-bit, fixed-length encoding, with the characters you can find in ASCII charts.
UTF8 is an 8-bit, variable-length encoding. All characters can be…
user541686
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29
votes
3 answers
What's the difference between printf("%s"), printf("%ls"), wprintf("%s"), and wprintf("%ls")?
Consider this sample program:
#include
#include
#include
int main()
{
std::string narrowstr = "narrow";
std::wstring widestr = L"wide";
printf("1 %s \n", narrowstr.c_str());
printf("2 %ls \n",…
Display Name
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21
votes
1 answer
Understanding and writing wchar_t in C
I'm currently rewriting (a part of) the printf() function for a school project.
Overall, we were required to reproduce the behaviour of the function with several flags, conversions, length modifiers ...
The only thing I have left to do and that gets…
kRYOoX
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19
votes
5 answers
WideCharToMultiByte() vs. wcstombs()
What is the difference between WideCharToMultiByte() and wcstombs()
When to use which one?
Greenhorn
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19
votes
3 answers
Displaying wide chars with printf
I'm trying to understand how does printf work with wide characters (wchar_t).
I've made the following code samples :
Sample 1 :
#include
#include
int main(void)
{
wchar_t *s;
s = (wchar_t…
vmonteco
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10
votes
2 answers
What is the difference between WideChar and AnsiChar?
I'm upgrading some ancient (from 2003) Delphi code to Delphi Architect XE and I'm running into a few problems. I am getting a number of errors where there are incompatible types. These errors don't happen in Delphi 6 so I must assume that this is…
Daisetsu
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10
votes
3 answers
Read wide char from a stream created with fmemopen
I'm trying to read a wide char from a stream that was created using fmemopen with a char *.
char *s = "foo bar foo";
FILE *f = fmemopen(s,strlen(s),"r");
wchar_t c = getwc(f);
getwc throws a segmentation fault, I checked using GDB.
I know this is…
MD XF
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9
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1 answer
C++: wide characters outputting incorrectly?
My code is basically this:
wstring japan = L"日本";
wstring message = L"Welcome! Japan is ";
message += japan;
wprintf(message.c_str());
I'm wishing to use wide strings but I do not know how they're outputted, so I used wprintf. When I run…
John D.
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7
votes
2 answers
Macro Without Space
I have a macro I use for debugging.
#define diagnostic_arg(message,...) fprintf(stderr,message,__VA_ARGS__)
I've found that I need to use wide-chars in my program, so I would like to change just my macro and have everything work:
#define…
Richard
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7
votes
3 answers
wide version of __FUNCTION__ on linux
is there a way i can print __FUNCTION__ as a wide character on linux?
the trick with the WIDEN doesn't work for me, the gcc compiler prints:
error: ?L_FUNCTION_? was not declared in this scope
any help?
Thanks
sramij
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7
votes
1 answer
iostreams - Print `wchar_t` or `charXX_t` value as a character
If you feed a wchar_t, char16_t, or char32_t value to a narrow ostream, it will print the numeric value of the code point.
#include
using std::cout;
int main()
{
cout << 'x' << L'x' << u'x' << U'x' << '\n';
}
prints x120120120. This…
zwol
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7
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1 answer
Why there are no "unsigned wchar_t" and "signed wchar_t" types?
The signedness of char is not standardized. Hence there are signed char and unsigned char types. Therefore functions which work with single character must use the argument type which can hold both signed char and unsigned char (this
type was chosen…
Igor Liferenko
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7
votes
4 answers
Use string litterals in a "char type" templated class
I have a template class in C++ which takes as a char_type template parameter the character type, such as char, wchar_t, char32_t, etc... The class then use std::basic_string in the code.
Then somewhere in the class I fill a table of…
galinette
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