Format
#include <wchar.h>
int wcswidth (const wchar_t *wcs, size_t n);Language Level: XPG4
Threadsafe: Yes.
Locale Sensitive: The behavior of this function might be affected by the LC_CTYPE category of the current locale if LOCALETYPE(*LOCALE) is specified on the compilation command. The behavior of this function might also be affected by the LC_UNI_CTYPE category of the current locale if LOCALETYPE(*LOCALEUCS2) or LOCALETYPE(*LOCALEUTF) is specified on the compilation command. This function is not available when LOCALETYPE(*CLD) is specified on the compilation command. For more information, see Understanding CCSIDs and Locales.
Wide Character Function: See Wide Characters for more information.
Description
The wcswidth() function determines the number of printing positions that a graphic representation of n wide characters (or fewer than n wide characters if a null wide character is encountered before n wide characters have been exhausted) in the wide string pointed to by wcs occupies on a display device. The number is independent of its location on the device.
The value of errno may be set to EINVAL (non-printing wide character).
Return Value
The wcswidth() function either returns:
Example that uses wcswidth()
#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));
}
/************The output is as follows**************/
/*
*/
/* wcs has a width of: 3 */
/*
*/
/**********************************************/Related Information