outputing text

[Neel]

Hi,
I want to print most significant digit of a number

eg. if its 1.234455666, I want to print 1.23445
if it is 123.123456, I want to print 123.123

I tried using printf("%6f",va lue); but it means placing 6 digit of
decimal value.

I want to have total of 6 digits only.
how do I do this?

Thanks

[MisterE]

Re: outputing text

Neel wrote:

Hi,
I want to print most significant digit of a number
>
eg. if its 1.234455666, I want to print 1.23445
if it is 123.123456, I want to print 123.123
>
I tried using printf("%6f",va lue); but it means placing 6 digit of
decimal value.
>
I want to have total of 6 digits only.
how do I do this?
>
Thanks

You want to do printf("%6g",va lue);

g is for double in scientific format (ie number of sig figs)

[MisterE]

Re: outputing text

>
You want to do printf("%6g",va lue);
>
g is for double in scientific format (ie number of sig figs)

You might also want to look at this:

http://www.thinkage.ca/english/gcos/expl/nsc/lib/printf.html

I didn't know there were so many possibilities that were actually ANSI,
wonder what C99 etc says about this

[James Kuyper]

Re: outputing text

MisterE wrote:

>

>>
>You want to do printf("%6g",va lue);
>>
>g is for double in scientific format (ie number of sig figs)

>
You might also want to look at this:

http://www.thinkage.ca/english/gcos/expl/nsc/lib/printf.html

>
I didn't know there were so many possibilities that were actually ANSI,
wonder what C99 etc says about this

What that document refers to as the the "type" field is a combination of
what C99 calls length modifiers and conversion specifiers.

C99 adds the following length specifiers: hh (signed char) ll (long
long), j (intmax_t), z (size_t), t (ptrdiff_t). When combined with
conversion specifiers for unsigned types, the first three all refer to
the corresponding unsigned type.

C99 also adds two new conversion specifiers: a,A: hexadecimal floating point