Syntax

#include <wchar.h>
int wcwidth (const wint_t wc);

wcwidth determines the number of printing positions that a graphic representation of wc occupies on a display device. Each of the printing wide characters occupies its own number of printing positions on a display device. The number is independent of its location on the device.

The behavior of wcwidth is affected by the LC_CTYPE category.

wcwidth returns the number of printing positions occupied by wc. If wc is a null wide character, wcwidth returns 0. If wc is not a printing wide character, wc returns -1.

This example determines the printing width for the wide character A.

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

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

   printf("%lc has a width of %d\n", wc, wcwidth(wc));
   return 0;

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

      A has a width of 1
   ****************************************************************************/
}

• wcswidth

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