1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Chris Torek and the American National Standards Committee X3, 6.\" on Information Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. All advertising materials mentioning features or use of this software 17.\" must display the following acknowledgement: 18.\" This product includes software developed by the University of 19.\" California, Berkeley and its contributors. 20.\" 4. Neither the name of the University nor the names of its contributors 21.\" may be used to endorse or promote products derived from this software 22.\" without specific prior written permission. 23.\" 24.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34.\" SUCH DAMAGE. 35.\" 36.\" @(#)strcat.3 8.1 (Berkeley) 6/4/93 37.\" 38.Dd June 4, 1993 39.Dt STRCAT 3 40.Os 41.Sh NAME 42.Nm strcat 43.Nd concatenate strings 44.Sh SYNOPSIS 45.Fd #include <string.h> 46.Ft char * 47.Fn strcat "char *s" "const char *append" 48.Ft char * 49.Fn strncat "char *s" "const char *append" "size_t count" 50.Sh DESCRIPTION 51The 52.Fn strcat 53and 54.Fn strncat 55functions 56append a copy of the null-terminated string 57.Fa append 58to the end of the null-terminated string 59.Fa s , 60then add a terminating 61.Ql \e0 . 62The string 63.Fa s 64must have sufficient space to hold the result. 65.Pp 66The 67.Fn strncat 68function 69appends not more than 70.Fa count 71characters. 72.Sh RETURN VALUES 73The 74.Fn strcat 75and 76.Fn strncat 77functions 78return the pointer 79.Fa s . 80.Sh SEE ALSO 81.Xr bcopy 3 , 82.Xr memccpy 3 , 83.Xr memcpy 3 , 84.Xr memmove 3 , 85.Xr strcpy 3 86.Sh STANDARDS 87The 88.Fn strcat 89and 90.Fn strncat 91functions 92conform to 93.St -ansiC . 94