On Sun, 9 Sep 2018, Fāng-ruì Sòng wrote:
> > > -     for (; fd; fd/=10) buf[--i] = '0' + fd%10;
> > > +     for (j=fd; i++, j /= 10; );
> >
> > This is not correct as it only increments i once. A do-while loop would do
> > the
> > job better here.
> >
> 
> May I defend for myself?  for (j=fd; i++, j /= 10; );
> i++ is in the loop condition so it will be incremented multiple times.

Sorry, my mistake there (I misread the change).

Alexander