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       strcat.3 (626B)
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            1 .TH strcat 3
            2 .SH NAME
            3 strcat - concatenate two strings
            4 .SH SYNOPSIS
            5 #include <string.h>
            6 
            7 char *strcat(char *restrict s1, const char *restrict s2)
            8 .SH DESCRIPTION
            9 The
           10 .BR strcat ()
           11 function appends a copy of the string
           12 pointed to by
           13 .I s2
           14 (including the terminating null character)
           15 to the end of the string pointed to by
           16 .IR s1 .
           17 .PP
           18 The initial character of
           19 .I s2
           20 overwrites the null character
           21 at the end of
           22 .I s1
           23 .PP
           24 If copying takes place between objects that overlap,
           25 the behaviour is undefined.
           26 .SH RETURN VALUE
           27 The
           28 .BR strcat ()
           29 function shall return the pointer
           30 .IR s1 .
           31 .SH STANDARDS
           32 ISO/IEC 9899:1999 Section 7.21.3.1