1*1987Swnj /* @(#)strncat.c 4.1 (Berkeley) 12/21/80 */ 2*1987Swnj /* 3*1987Swnj * Concatenate s2 on the end of s1. S1's space must be large enough. 4*1987Swnj * At most n characters are moved. 5*1987Swnj * Return s1. 6*1987Swnj */ 7*1987Swnj 8*1987Swnj char * 9*1987Swnj strncat(s1, s2, n) 10*1987Swnj register char *s1, *s2; 11*1987Swnj register n; 12*1987Swnj { 13*1987Swnj register char *os1; 14*1987Swnj 15*1987Swnj os1 = s1; 16*1987Swnj while (*s1++) 17*1987Swnj ; 18*1987Swnj --s1; 19*1987Swnj while (*s1++ = *s2++) 20*1987Swnj if (--n < 0) { 21*1987Swnj *--s1 = '\0'; 22*1987Swnj break; 23*1987Swnj } 24*1987Swnj return(os1); 25*1987Swnj } 26