1 /* @(#)strncpy.c 4.1 (Berkeley) 12/21/80 */ 2 /* 3 * Copy s2 to s1, truncating or null-padding to always copy n bytes 4 * return s1 5 */ 6 7 char * 8 strncpy(s1, s2, n) 9 register char *s1, *s2; 10 { 11 register i; 12 register char *os1; 13 14 os1 = s1; 15 for (i = 0; i < n; i++) 16 if ((*s1++ = *s2++) == '\0') { 17 while (++i < n) 18 *s1++ = '\0'; 19 return(os1); 20 } 21 return(os1); 22 } 23