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how to get 0.000001 with printf?

Hello,

I'd like to print floating point numbers without trailing zeros.
I tried using %g, but now small numbers are printed in the %e
style ("Style e is used if the exponent from its conversion is
less than -4"). Is there some way to control this number (-4)?
I.e. can I get printf to print something like 0.0000001, but no
trailing zeros? Or should I do this by hand?

Thanks,
Mandar.

Nov 15 '05
21 1998

Richard Tobin wrote:
In article <11************ **********@f14g 2000cwb.googleg roups.com>,
William Hughes <wp*******@hotm ail.com> wrote:
Normally, .2, .20, .200 mean different things, so supressing
the trailing zeros usually a BAD THING.


However, the author of the program may not be in a position to know
which of these is the right one.

As an extreme but realistic example, consider a general-purpose
calculator program. Only the user knows the appropriate precision,
and always presenting resulta to many figures would be hard to read.
A pocket calculator that didn't suppress trailing zeros would be
unpopular.

-- Richard


Yes. On the calculator in front of me if I enter 1/5 I get
..2, and if I enter 1/7 I get 0.142857142. I do not consider
this a GOOD THING. Suppressing zeros does not mean that no
default precision is being used, just that this precision is
inconsistently hidden from the user.

-William Hughes

Nov 15 '05 #21
In article <11************ **********@g14g 2000cwa.googleg roups.com>,
William Hughes <wp*******@hotm ail.com> wrote:
Yes. On the calculator in front of me if I enter 1/5 I get
.2, and if I enter 1/7 I get 0.142857142. I do not consider
this a GOOD THING.


However, you are not a typical calculator user.

-- Richard
Nov 15 '05 #22

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