Syntax
#include <wchar.h> int wcswidth (const wchar_t *wcs, size_t n);Description
wcswidth determines the number of printing positions occupied on a display device by a graphic representation of n wide characters in the string pointed to by wcs (or fewer than n wide characters, if a null wide character is encountered before n characters have been exhausted). The number is independent of its location on the device.
The behavior of wcswidth is affected by the LC_CTYPE category.
wcswidth returns the number of printing positions occupied by the wide-character string. If wcs points to a null wide character, wcswidth returns 0. If any wide character in wcs is not a printing character, wcswidth returns -1.
This example uses wcswidth to calculate the display width of ABC.
#include <stdio.h>
#include <wchar.h>
int main(void)
{
wchar_t *wcs = L"ABC";
printf("wcs has a width of: %d\n", wcswidth(wcs,3));
return 0;
/****************************************************************************
The output should be similar to :
wcs has a width of: 3
****************************************************************************/
}
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