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researchv10 Norman

/*
 * Concatenate s2 on the end of s1.  S1's space must be large enough.
 * Return s1.
 */

char *
strcat(s1, s2)
register char *s1, *s2;
{
	register char *os1;

	os1 = s1;
	while (*s1++)
		;
	--s1;
	while (*s1++ = *s2++)
		;
	return(os1);
}

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