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[unix-history] / usr / src / lib / libc / string / strcat.c

#ifndef lint
static char sccsid[] = "@(#)strcat.c    5.1 (Berkeley) %G%";
#endif not lint

/*
* 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);
}