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.TH strcat 3
.SH NAME
strcat - concatenate two strings
.SH SYNOPSIS
#include <string.h>

char *strcat(char *restrict s1, const char *restrict s2)
.SH DESCRIPTION
The
.BR strcat ()
function appends a copy of the string
pointed to by
.I s2
(including the terminating null character)
to the end of the string pointed to by
.IR s1 .
.PP
The initial character of
.I s2
overwrites the null character
at the end of
.I s1
.PP
If copying takes place between objects that overlap,
the behaviour is undefined.
.SH RETURN VALUE
The
.BR strcat ()
function shall return the pointer
.IR s1 .
.SH STANDARDS
ISO/IEC 9899:1999 Section 7.21.3.1