fputws - Man Page

write a wide-character string to a FILE stream


Standard C library (libc, -lc)


#include <wchar.h>

int fputws(const wchar_t *restrict ws, FILE *restrict stream);


The fputws() function is the wide-character equivalent of the fputs(3) function. It writes the wide-character string starting at ws, up to but not including the terminating null wide character (L'\0'), to stream.

For a nonlocking counterpart, see unlocked_stdio(3).

Return Value

The fputws() function returns a nonnegative integer if the operation was successful, or -1 to indicate an error.


For an explanation of the terms used in this section, see attributes(7).

fputws()Thread safetyMT-Safe


POSIX.1-2001, POSIX.1-2008, C99.


The behavior of fputws() depends on the LC_CTYPE category of the current locale.

In the absence of additional information passed to the fopen(3) call, it is reasonable to expect that fputws() will actually write the multibyte string corresponding to the wide-character string ws.

See Also

fputwc(3), unlocked_stdio(3)

Referenced By

fputwc(3), puts(3).

2023-02-05 Linux man-pages 6.03