puts, fputs - Writes a string to a stream
#include <stdio.h>
int puts(
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 structure 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 output 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() function
Full use.
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 underlying
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 signal 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).
puts(3)
[ Back ] | 