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.\" Hey Emacs! This file is -*- nroff -*- source.
.\" Copyright 1995 James R. Van Zandt <>
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.TH STPCPY 3 2012-03-15 "GNU" "Linux Programmer's Manual"
stpcpy \- copy a string returning a pointer to its end
.B #include <string.h>
.BI "char *stpcpy(char *" dest ", const char *" src );
.in -4n
Feature Test Macro Requirements for glibc (see
.BR feature_test_macros (7)):
.BR stpcpy ():
.PD 0
.ad l
.RS 4
.TP 4
Since glibc 2.10:
_XOPEN_SOURCE\ >=\ 700 || _POSIX_C_SOURCE\ >=\ 200809L
Before glibc 2.10:
.BR stpcpy ()
function copies the string pointed to by \fIsrc\fP
(including the terminating null byte (\(aq\\0\(aq)) to the array pointed to by
The strings may not overlap, and the destination string
\fIdest\fP must be large enough to receive the copy.
.BR stpcpy ()
returns a pointer to the \fBend\fP of the string
\fIdest\fP (that is, the address of the terminating null byte)
rather than the beginning.
This function was added to POSIX.1-2008. Before that, it was not part of
the C or POSIX.1 standards, nor customary on UNIX systems, but was not a
GNU invention either. Perhaps it came from MS-DOS. It is also present on
the BSDs.
This function may overrun the buffer
.IR dest .
For example, this program uses
.BR stpcpy ()
to concatenate \fBfoo\fP and
\fBbar\fP to produce \fBfoobar\fP, which it then prints.
.in +4n
#define _GNU_SOURCE
#include <string.h>
#include <stdio.h>
char buffer[20];
char *to = buffer;
to = stpcpy(to, "foo");
to = stpcpy(to, "bar");
printf("%s\\n", buffer);
.BR bcopy (3),
.BR memccpy (3),
.BR memcpy (3),
.BR memmove (3),
.BR stpncpy (3),
.BR strcpy (3),
.BR string (3),
.BR wcpcpy (3)
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