"Yi, EungJun" <semtlen...@gmail.com> writes:
> I think it is possible like this:
> num_langs += 1; /* for '*' */
> decimal_places = 1 + (num_langs > 10) + (num_langs > 100);
> snprintf(q_format, sizeof(q_format), "; q=%%.%df", decimal_places);
> for (q_precision = 1.0; decimal_places-- > 0;) q_precision /= 10;
> Does this one look better than before? I'm not sure which one is better.
> ps. The last line can be simpler by using pow() but I'm not sure it is
> okay to include math.h.
If you do not want floating point (and I think we tend to avoid it
when we do not need it), you can realize that in your use of "0.1"
and "0.01" and "0.001" there is nothing fundamentally floating-point;
you can measure how many digits below the two-byte string zero-dot
you would want upfront (by counting num_langs), and show an integer
counter zero-padded to the left to that width.
That would avoid having to even worry about a possible funny case
where subtracting 0.01 ten times from 0.1 may not yield zero (or the
result of subtracting nine times may not reach 0.01) due to rounding
errors accumulating, which was the first thing that came to my mind
when I saw your loop.
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