1.\" $OpenBSD: fputs.3,v 1.13 2017/12/01 11:18:40 schwarze Exp $ 2.\" 3.\" Copyright (c) 1990, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" This code is derived from software contributed to Berkeley by 7.\" Chris Torek and the American National Standards Committee X3, 8.\" on Information Processing Systems. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 3. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.Dd $Mdocdate: December 1 2017 $ 35.Dt FPUTS 3 36.Os 37.Sh NAME 38.Nm fputs , 39.Nm puts 40.Nd output a line to a stream 41.Sh SYNOPSIS 42.In stdio.h 43.Ft int 44.Fn fputs "const char *str" "FILE *stream" 45.Ft int 46.Fn puts "const char *str" 47.Sh DESCRIPTION 48The function 49.Fn fputs 50writes the string pointed to by 51.Fa str 52to the stream pointed to by 53.Fa stream . 54.Pp 55The function 56.Fn puts 57writes the string 58.Fa str , 59and a terminating newline character, 60to the stream 61.Em stdout . 62.Sh RETURN VALUES 63Upon successful completion a non-negative integer is returned. 64Otherwise, 65.Dv EOF 66is returned, the global variable 67.Va errno 68is set to indicate the error, 69and the error indicator is set for the stream. 70.Sh ERRORS 71.Bl -tag -width Er 72.It Bq Er EBADF 73The 74.Fa stream 75supplied 76is not a writable stream. 77.El 78.Pp 79The functions 80.Fn fputs 81and 82.Fn puts 83may also fail and set 84.Va errno 85for any of the errors specified for the routines 86.Xr write 2 . 87.Sh SEE ALSO 88.Xr ferror 3 , 89.Xr fputws 3 , 90.Xr putc 3 , 91.Xr stdio 3 92.Sh STANDARDS 93The functions 94.Fn fputs 95and 96.Fn puts 97conform to 98.St -ansiC . 99.Sh HISTORY 100The function 101.Fn puts 102first appeared in 103.At v6 104and 105.Fn fputs 106in 107.At v7 . 108