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puts(3)
NAME
puts, fputs - Writes a string to a stream
LIBRARY
Standard C Library (libc.a)
SYNOPSIS
#include <stdio.h>
int puts(
const char *string);
int fputs(
const char *string,
FILE *stream);
PARAMETERS
string Points to a string to be written to output.
stream Points to the FILE structure of an open file.
DESCRIPTION
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
NOTES
AES Support Level:
Full use.
RETURN VALUES
Upon successful completion, the puts() and fputs() functions return the
number of characters written. Both subroutines return EOF on an error.
ERRORS
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.
[EAGAIN] The O_NONBLOCK flag is set for the file descriptor underlying
stream and the process would be delayed in the write operation.
[EBADF] The file descriptor underlying stream is not a valid file
descriptor open for writing.
[EFBIG] An attempt was made to write to a file that exceeds the process's
file size limit or the maximum file size.
[EINTR] The read operation was interrupted by a signal that was caught,
and no data was transferred.
[EIO] 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.
[ENOSPC] There was no free space remaining on the device containing the
file.
[EPIPE] 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.
RELATED INFORMATION
Functions: fgetws(3), fputws(3), gets(3), printf(3), putc(3), putwc(3).
 |
Index for Section 3 |
|
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Alphabetical listing for P |
|
 |
Top of page |
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