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c++: getting ascii value of a wide char


By : Kynic0
Date : October 15 2020, 01:20 AM
wish help you to fix your issue You're contradicting yourself. International characters like ä are (by definition) not in the ASCII character set, so they don't have an "ascii value".
It depends on the exact encoding of your two-character array, if you can get the code point for a single character or not, and if so which format it will be in.
code :


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Can't assign wide char into wide char field.


By : user3872629
Date : March 29 2020, 07:55 AM
wish help you to fix your issue clang seems to support entering arbitrary byte sequences into to wide strings with the \x notation:
code :
wchar_t c = L'\x2126';
#include <stdio.h>
#include <wchar.h>
#include <stdlib.h>
#include <locale.h>

int main(void)
{
    setlocale(LC_ALL,"");
    wchar_t myChar1 = L'\x2126';
    wchar_t myChar2 = 0x2126;  // hexadecimal encoding of char Ω using UTF-16
    wprintf(L"This is char: %lc \n",myChar1);
    wprintf(L"This is char: %lc \n",myChar2);
}

Assigning non-ASCII characters to wide char and printing with printf


By : Steven Duvignau
Date : March 29 2020, 07:55 AM
hope this fix your issue I think your calls to printf() fail with an «Illegal byte sequence» error returned in errno, at least that is what happens here on MacOS X with the above example code (and also if using wprintf() instead of printf()). For me it works when I call setlocale(LC_ALL, ""); before the call to printf() so that it stops using the C locale by default:
code :
#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
int main(void)
{
    wchar_t wc = L'ć';

    setlocale(LC_ALL, "");
    printf("%lc\n", wc);

    return 0;
}

C : wrong char to ascii conversion (char from the extended ascii table)


By : user3321153
Date : March 29 2020, 07:55 AM
This might help you Because char is from -127 to 127. You can't use extended ASCII table like that.
I suggest you use wchar instead. Check wchar.h and wctype.h manual.

Convert UTF-32 wide char to UTF-16 wide char in Linux for Supplementary Plane characters


By : rexrider
Date : March 29 2020, 07:55 AM
I wish did fix the issue. The following is the code to convert UTF-32 encoded wide characters to UTF-16
code :
//Function to convert a Unicode string from platform-specific "wide characters" (wchar_t) to UTF-16.
void ConvertUTF32ToUTF16(wchar_t* source,
                         const uint32_t sourceLength,
                         wchar_t*& destination,
                         uint32_t& destinationLength)
{

  wchar_t wcharCharacter;
  uint32_t uniui32Counter = 0;

  wchar_t* pwszDestinationStart = destination;
  wchar_t* sourceStart = source;

  if(0 != destination)
  {
    while(uniui32Counter < sourceLength)
    {
      wcharCharacter = *source++;
      if(wcharCharacter <= 0x0000FFFF)
      {
        /* UTF-16 surrogate values are illegal in UTF-32
           0xFFFF or 0xFFFE are both reserved values */
        if(wcharCharacter >= 0xD800 && 
           wcharCharacter <= 0xDFFF)
        {
          *destination++ = 0x0000FFFD;
          destinationLength += 1;
        }
        else
        {
          /* source is a BMP Character */
          destinationLength += 1;
          *destination++ = wcharCharacter;
        }
      }
      else if(wcharCharacter > 0x0010FFFF)
      {
        /* U+10FFFF is the largest code point of Unicode Character Set */
        *destination++ = 0x0000FFFD;
        destinationLength += 1;
      }
      else
      {
        /* source is a character in range 0xFFFF - 0x10FFFF */
        wcharCharacter -= 0x0010000UL;
        *destination++ = (wchar_t)((wcharCharacter >> 10) + 0xD800);
        *destination++ = (wchar_t)((wcharCharacter & 0x3FFUL) + 0xDC00);
        destinationLength += 2;
      }

      ++uniui32Counter;
    }

    destination = pwszDestinationStart;
    destination[destinationLength] = '\0';
  }

  source = sourceStart;
} //function ends

Convert Char String of Wide Chars into ASCII


By : Aaron DeBruin
Date : March 29 2020, 07:55 AM
wish of those help On platforms where wchar_t is 2 bytes (ie, Windows), you can use wcstombs().
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