NAME
fputs,
fputs_unlocked, puts
— output a line to a
stream
LIBRARY
library “libc”
SYNOPSIS
#include
<stdio.h>
int
fputs(const
char *str, FILE
*stream);
int
fputs_unlocked(const
char *str, FILE
*stream);
int
puts(const
char *str);
DESCRIPTION
The functionfputs()
writes the string pointed to by str to the stream
pointed to by stream.
The
fputs_unlocked()
function is equivalent to fputs(), except that the
caller is responsible for locking the stream with
flockfile(3) before calling it. This function may be used to
avoid the overhead of locking the stream and to prevent races when multiple
threads are operating on the same stream.
The function
puts() writes
the string str, and a terminating newline character,
to the stream stdout.
RETURN VALUES
The functions fputs() and
puts() return a nonnegative integer on success and
EOF on error.
ERRORS
- [
EBADF] - The stream argument is not a writable stream.
The functions fputs() and
puts() may also fail and set
errno for any of the errors specified for the routines
write(2).
SEE ALSO
STANDARDS
The functions fputs() and
puts() conform to ISO/IEC 9899:1990
(“ISO C90”).