Bell 32V development

[unix-history] / usr / src / libc / gen / strncat.c

/*
* 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);
}