Re: what do the dots mean?

Well, the first dot along with the 24 (%.24s)
specifies to printf to print only 24 characters of the
string.

Second dot is a full stop after the string. :-)

-Sumit

--- _z33 wrote:

> I'm not able to understand the usage of dots (inside
> the printf's
> arguments) in the following code. Please enlighten
> me!
>
> [code]
> #include
> #include
>
> main()
> {
> time_t now;
>
> time(&now);
> printf("It's %.24s.\n", ctime(&now));
>
> system ("PAUSE");
> return 0;
> }
> [/code]
>
> _z33
> --
> I love TUX; well... that's an understatement :)
>
> -
> To unsubscribe from this list: send the line
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Re: what do the dots mean?

I am not sure why you are not seeing the last dot.

Okay, so when you remove the first dot, printf prints
the complete string which would have a newline
character (\n) as it's 25th element so the dot should
appear on the next line.

-Sumit

--- _z33 wrote:

> sumit kalra wrote:
> > Well, the first dot along with the 24 (%.24s)
> > specifies to printf to print only 24 characters of
> the
> > string.
> >
> > Second dot is a full stop after the string. :-)
> >
>
> Thanks for the info.
>
> But in that case when you remove the first dot you
> should be able to see
> the second dot for sure, right? But the moment I
> remove the first dot,
> the second dot disappears from the output.
>
>
> _z33
> --
> I love TUX; well... that's an understatement :)
>
> -
> To unsubscribe from this list: send the line
> "unsubscribe linux-newbie" in
> the body of a message to majordomo@vger.kernel.org
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> http://vger.kernel.org/majordomo-info.html
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>




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what do the dots mean?

I'm not able to understand the usage of dots (inside the printf's
arguments) in the following code. Please enlighten me!

[code]
#include
#include

main()
{
time_t now;

time(&now);
printf("It's %.24s.\n", ctime(&now));

system ("PAUSE");
return 0;
}
[/code]

_z33
--
I love TUX; well... that's an understatement :)

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Re: what do the dots mean?

sumit kalra wrote:
> Well, the first dot along with the 24 (%.24s)
> specifies to printf to print only 24 characters of the
> string.
>
> Second dot is a full stop after the string. :-)
>

Thanks for the info.

But in that case when you remove the first dot you should be able to see
the second dot for sure, right? But the moment I remove the first dot,
the second dot disappears from the output.


_z33
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Re: what do the dots mean?

No the second dot does NOT disappear... Watch your output closely.
You should also get yourself a linux distribution ( www.knoppix.org
has bootable CD or DVD images ). and try the command 'man ctime'
(the reason why I say that is that is that 'PAUSE' is a DOS command)

The %.24s says "Only print the first 24 characters of the output
from 'ctime'. You see, the output from ctime includes a newline as
the last (25th) character of it's output, so %.24s chops off the output
just before the newline.

I.e. the resultint output is \n.\n

The trailing dot is now on the next line.

_z33 wrote:

> sumit kalra wrote:
>
>> Well, the first dot along with the 24 (%.24s) specifies to printf to
>> print only 24 characters of the
>> string.
>>
>> Second dot is a full stop after the string. :-)
>>
>
> Thanks for the info.
>
> But in that case when you remove the first dot you should be able to
> see the second dot for sure, right? But the moment I remove the first
> dot, the second dot disappears from the output.

printf("It's %.24s.\n", ctime(&now));
system ("PAUSE");

--
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Re: what do the dots mean?

Stephen Samuel wrote:
> No the second dot does NOT disappear... Watch your output closely.
> You should also get yourself a linux distribution ( www.knoppix.org
> has bootable CD or DVD images ). and try the command 'man ctime'
> (the reason why I say that is that is that 'PAUSE' is a DOS command)
>
> The %.24s says "Only print the first 24 characters of the output
> from 'ctime'. You see, the output from ctime includes a newline as
> the last (25th) character of it's output, so %.24s chops off the output
> just before the newline.
>
> I.e. the resultint output is \n.\n
>
> The trailing dot is now on the next line.

Thanks. I saw that :)

_z33
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I love TUX; well... that's an understatement :)

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