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"Michael Mair" <> wrote in message
news:...
> dough wrote:
> > I want to read in lines from a file and then seperate the words so i
> > can do a process on each of the words. Say the text file
"readme.txt"
> > contains the following:

Interesting. No one has ever thought of doing that before. Where did you
come up with such a great idea for a program? It's unlike anything I've
ever heard of...

> > Also, is there anyway to adjust the size of the buffer or reallocate
> > the memory so it doesn't overflow and get a seg error.
>
> realloc() helps you do that.
> Have a look at the comp.lang.c archives to see how to use it.


That would be like studying. If he wanted to study he would go to
school.

>
> If you do not need the words in context, you also use getc() which
> may be clearer:
>

<Homework answers snipped>

Nice job you get him an A-.

--
Mabden

On 4 Oct 2005 11:39:39 -0700, "dough" <> wrote:

>I want to read in lines from a file and then seperate the words so i
>can do a process on each of the words. Say the text file "readme.txt"
>contains the following:

It would be nice if you mentioned what your problem was.

snip

>Heres what I have so far.
>
>#include <ctype.h>
>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>
>void process(char *s) /* whats here is not really important *
>{
> printf("%s", s);
>}
>
>int main() {
>
>char buffer[80];
>FILE *f = fopen("readme.txt", "r");
>char *s;
>
>while( fgets(buffer, sizeof(buffer), f) != NULL ) /* reads a line */
>{
> while( sscanf(buffer, "%s", s) ) /* scans for words in line */

s doesn't point anywhere sscanf can write to. This invokes undefined
behavior.

> {
> process(s); /* do stuff to the words */
> }
>}
>
>fclose(f);
>return 0;
>
>}
>
>Also, is there anyway to adjust the size of the buffer or reallocate
>the memory so it doesn't overflow and get a seg error.

The seg error you experience has nothing to do with buffer, since you
never overflow it. It has everything to do with failing to have s
point somewhere.


<<Remove the del for email>>

Mabden wrote:
> "Michael Mair" <> wrote in message
> news:...
>
[snip]

>>If you do not need the words in context, you also use getc() which
>>may be clearer:
>
> <Homework answers snipped>
>
> Nice job you get him an A-.

The original message was not too obviously a homework question
to me and contained a first shot at the problem, so I decided
to give the OP the benefit of doubt. If "dough" posts something
like that again or does not respond to the answer he or she got
in this thread, I won't.


Cheers
Michael
--
E-Mail: Mine is an /at/ gmx /dot/ de address.