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I have a string that I want to extract some fields out of.

For example

ZABDE10FGH20
ZFDSF11FGG21
(etc)

I might want to extract the 2 sets of numbers.

One option would be to use throwaway buffers.

char buffer1[6];
int num1;
char buffer[4];
int num2;

and then use

fscanf( fp , "%5s%2d%3s%d" , buffer1, num1 , buffer2, num2 );

Is there a better way to get scanf to skip lines other than having it
write them to an unused buffer ?

On Sep 6, 10:36 pm, raph...@gmail.com wrote:

<snip>

> Is there a better way to get scanf to skip lines other than having it
> write them to an unused buffer ?

you can discard the matched result by using `*'.
Ie:
scanf("%*s%s", buf);

with input:
hello world

would read `world' into the buffer.

On Sep 6, 8:57 pm, vipps...@gmail.com wrote:
> On Sep 6, 10:36 pm, raph...@gmail.com wrote:
>
> <snip>
>
> > Is there a better way to get scanf to skip lines other than having it
> > write them to an unused buffer ?
>
> you can discard the matched result by using `*'.
> Ie:
> scanf("%*s%s", buf);
>
> with input:
> hello world
>
> would read `world' into the buffer.

Thanks

On 2008-09-06, <> wrote:
> On Sep 6, 10:36 pm, raph...@gmail.com wrote:
>
><snip>
>
>> Is there a better way to get scanf to skip lines other than having it
>> write them to an unused buffer ?
>
> you can discard the matched result by using `*'.
> Ie:
> scanf("%*s%s", buf);
>
> with input:
> hello world
>
> would read `world' into the buffer.

Yikes! scanf("%s") should not be used without a length qualifier,
otherwise it is effectively gets().

--
Andrew Poelstra
To email me, use the above email addresss with .com set to .net

On Sep 6, 11:35 pm, Andrew Poelstra <apoels...@supernova.home> wrote:
> On 2008-09-06, vipps...@gmail.com <vipps...@gmail.com> wrote:
>
> > On Sep 6, 10:36 pm, raph...@gmail.com wrote:
>
> ><snip>
>
> >> Is there a better way to get scanf to skip lines other than having it
> >> write them to an unused buffer ?
>
> > you can discard the matched result by using `*'.
> > Ie:
> > scanf("%*s%s", buf);
>
> > with input:
> > hello world
>
> > would read `world' into the buffer.
>
> Yikes! scanf("%s") should not be used without a length qualifier,
> otherwise it is effectively gets().

Don't worry. buf is long enough

On Sun, 07 Sep 2008 00:26:06 -0700, vippstar wrote:

> On Sep 6, 11:35 pm, Andrew Poelstra <apoels...@supernova.home> wrote:
>> On 2008-09-06, vipps...@gmail.com <vipps...@gmail.com> wrote:
>>
>> > On Sep 6, 10:36 pm, raph...@gmail.com wrote:
>>
>> ><snip>
>>
>> >> Is there a better way to get scanf to skip lines other than having
>> >> it write them to an unused buffer ?
>>
>> > you can discard the matched result by using `*'. Ie:
>> > scanf("%*s%s", buf);
>>
>> > with input:
>> > hello world
>>
>> > would read `world' into the buffer.
>>
>> Yikes! scanf("%s") should not be used without a length qualifier,
>> otherwise it is effectively gets().
>
> Don't worry. buf is long enough

That's just hilarious Fancy reading that
excuse as a comment in some core system.

--
OU

wrote:
> Andrew Poelstra <apoels...@supernova.home> wrote:
>
.... snip ...
>
>> Yikes! scanf("%s") should not be used without a length qualifier,
>> otherwise it is effectively gets().
>
> Don't worry. buf is long enough

How did you manage to define an infinitely large buf?

--
[mail]: Chuck F (cbfalconer at maineline dot net)
[page]: <http://cbfalconer.home.att.net>
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