view target-utils/libc/strncat.c @ 351:f0e9bb28b4d6

uptools/atcmd/atinterf.c: no target debug mode implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 04 Feb 2018 18:44:41 +0000
parents 7fb62fc724dc
children
line wrap: on
line source

/*
 * Concatenate s2 on the end of s1.  S1's space must be large enough.
 * At most n characters are moved.
 * Return s1.
 */

char *
strncat(s1, s2, n)
	register char *s1, *s2;
	register n;
{
	register char *os1;

	os1 = s1;
	while (*s1++)
		;
	--s1;
	while (*s1++ = *s2++)
		if (--n < 0) {
			*--s1 = '\0';
			break;
		}
	return(os1);
}