puts, fputs - Writes a string to a stream
const char *string ); int fputs(
const char *string,
FILE *stream );
Standard C Library (libc)
Points to a string to be written to output. Points to the FILE struc‐
ture of an open file.
The puts() function writes the null-terminated string pointed to by the
string parameter, followed by a newline character, to the standard out‐
put stream, stdout.
The fputs() function writes the null-terminated string pointed to by
the string parameter to the output stream specified by the stream
parameter. The fputs() function does not append a newline character.
Neither function writes the terminating null byte.
The st_ctime and st_mtime fields of the file are marked for update
between the successful execution of the puts() or fputs() function and
the next successful completion of a call to one of the following: An
fflush() or fclose() function on the same stream The exit() or abort()
Upon successful completion, the puts() and fputs() functions return the
number of characters written. Both subroutines return EOF on an error.
The puts() and fputs() functions fail under either of the following
conditions: The stream is unbuffered. The stream's buffer needed to be
flushed, the function call caused an underlying write() or lseek() to
be invoked, and this underlying operation fails with incomplete output.
In addition, if any of the following conditions occur, the puts() or
fputs() function sets errno to the corresponding value. The O_NONBLOCK
option is set for the file descriptor underlying stream and the process
would be delayed in the write operation. The file descriptor underly‐
ing stream is not a valid file descriptor open for writing. An attempt
was made to write to a file that exceeds the process's file size limit
or the maximum file size. The read operation was interrupted by a sig‐
nal that was caught, and no data was transferred. The implementation
supports job control; the process is a member of a background process
group attempting to write to its controlling terminal; TOSTOP is set;
the process is neither ignoring nor blocking SIGTTOU, and the process
group of the process is orphaned. This error may also be returned under
implementation-defined conditions. There was no free space remaining
on the device containing the file. An attempt was made to write to a
pipe or FIFO that is not open for reading by any process. A SIGPIPE
signal will also be sent to the process.
Functions: fgetws(3), fputws(3), gets(3), printf(3), putc(3), putwc(3).