xref: /original-bsd/lib/libc/string/strcat.c (revision 1a56dd2c)
1 #if defined(LIBC_SCCS) && !defined(lint)
2 static char sccsid[] = "@(#)strcat.c	5.2 (Berkeley) 03/09/86";
3 #endif LIBC_SCCS and not lint
4 
5 /*
6  * Concatenate s2 on the end of s1.  S1's space must be large enough.
7  * Return s1.
8  */
9 
10 char *
11 strcat(s1, s2)
12 register char *s1, *s2;
13 {
14 	register char *os1;
15 
16 	os1 = s1;
17 	while (*s1++)
18 		;
19 	--s1;
20 	while (*s1++ = *s2++)
21 		;
22 	return(os1);
23 }
24