Re: [Dev-C++] Simple formatted output question

[Luigi S. <gi...@li...>]

On Wed, Nov 06, 2002 at 09:31:50PM -0500, Scott Williams wrote:
> Hi,
> 
> This is a "C" question (not C++).  When printing a number in exponential
> format (%e) using printf or one of its friends, three digits are used for
> the exponent:
> 
>    1.2345e+006.
> 
> I would like to change this behavior so that the exponent only uses as many
> digits as it needs:
> 
>    1.2345e+6
> 
> I've looked, but this feature does not appear to be built into any of the
> format modifiers/switches.  Am I missing something and/or is there an easy
> way to do this?
> 
> Thnx,
> Scott
> 

Hi, Scott

Assuming that by "C" you mean C89, the answer is: you are right, 
there seems to be no built-in way to achieve what you are looking for. 
However, an easy (probably too simple?) solution could be:

- print the value into a string using scientific notation
- erase unwanted extra leading zeroes in the exponent

To better show the point, I attached an archive with:
- a simple implementation of the above function
- a short program to test the function
- a file with some values I used for the test







   

-- 
>> gisan >>
So you're back... about time...