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This code is derived from software contributed to Berkeley by
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on Information Processing Systems.

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@(#)fputs.3 8.1 (Berkeley) 6/4/93
$FreeBSD$

.Dd January 23, 2020 .Dt FPUTS 3 .Os .Sh NAME .Nm fputs , .Nm fputs_unlocked , .Nm puts .Nd output a line to a stream .Sh LIBRARY .Lb libc .Sh SYNOPSIS n stdio.h .Ft int .Fn fputs "const char *str" "FILE *stream" .Ft int .Fn fputs_unlocked "const char *str" "FILE *stream" .Ft int .Fn puts "const char *str" .Sh DESCRIPTION The function .Fn fputs writes the string pointed to by .Fa str to the stream pointed to by .Fa stream . The terminating
.Dv NUL
character is not written.

p The .Fn fputs_unlocked function is equivalent to .Fn fputs , except that the caller is responsible for locking the stream with .Xr 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.

p The function .Fn puts writes the string .Fa str , and a terminating newline character, to the stream .Dv stdout . .Sh RETURN VALUES The functions .Fn fputs and .Fn puts return a nonnegative integer on success and .Dv EOF on error. .Sh ERRORS l -tag -width Er t Bq Er EBADF The .Fa stream argument is not a writable stream. .El

p The functions .Fn fputs and .Fn puts may also fail and set .Va errno for any of the errors specified for the routines .Xr write 2 . .Sh SEE ALSO .Xr ferror 3 , .Xr fputws 3 , .Xr putc 3 , .Xr stdio 3 .Sh STANDARDS The functions .Fn fputs and .Fn puts conform to .St -isoC .