Syntax

#include <stdio.h>
#include <wchar.h>
int wctob(wint_t wc);

wctob determines whether wc corresponds to a member of the extended character set, whose multibyte character has a length of 1 byte

The behavior of wctob is affected by the LC_CTYPE category of the current locale.

If c corresponds to a multibyte character with a length of 1 byte, wctob returns the single-byte representation. Otherwise, wctob returns EOF.

This example uses wctob to test if the wide character A is a valid single-byte character.

#include <stdio.h>
#include <wchar.h>

int main(void)
{
   wint_t wc = L'A';

   if (wctob(wc) == wc)
      printf("%lc is a valid single byte character\n", wc);
   else
      printf("%lc is not a valid single byte character\n", wc);
   return 0;

   /****************************************************************************
      The output should be similar to :

      A is a valid single byte character
   ****************************************************************************/
}

• mbtowc
  
• wctomb
  
• wcstombs

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