wchar_t *
fgetws(wchar_t * restrict ws, int n, FILE * restrict fp)
)
function
reads at most one less than the number of characters specified by
n
from the given
fp
and stores them in the wide character string
ws.
Reading stops when a newline character is found,
at end-of-file or error.
The newline, if any, is retained.
If any characters are read and there is no error, a
`\0'
character is appended to end the string.
)
returns
ws.
If end-of-file occurs before any characters are read,
fgetws()
returns
NULL
and the buffer contents remain unchanged.
If an error occurs,
fgetws()
returns
NULL
and the buffer contents are indeterminate.
The
fgetws()
function
does not distinguish between end-of-file and error, and callers must use
feof(3)
and
ferror(3)
to determine which occurred.
EBADF]fp
argument is not a readable stream.
EILSEQ]
The function
fgetws()
may also fail and set
errno
for any of the errors specified for the routines
fflush(3),
fstat(2),
read(2),
or
malloc(3).
)
function
conforms to
IEEE Std 1003.1-2001 (``POSIX.1'') .