Sucheta Ghosh napisał(a):
> I wished to read a file and get some lines from there like this:
> -----
> fp=fopen("filename", "r");
> for(k=0; k<8; k++){
> n=a[k];
> for (i=1; i<=n; i++) //Here 'n' is the line number
> fgets(s, 100, fp);
> puts(s);
> rewind(fp);
> }
> -----
> -----
> This is the code snippet, which is working so well after compiling with
> 'gcc' compiler, but when I added this code inside Gtk+ callback.c, a
> runtime error is occuring before execution of 'fgets'. I have already
> included 'stdio.h', but even then it is not executing.
>
> Do you have any idea that how to overcome this problem?
I can see some problems here, but that's not really GTK-related;
well - there's also a change that included snippet was simply
too short
1) no error checking for fopen(), fgets() - You don't to anything
if they fail (and that's most probable)
2) can't see any fclose() - multiple "fopen()"s without closing
the file is BAD :)
3) You're reading the same file 8 times - and that's *at least*
non-optimal - of course that depends on what exactly you're going
to achieve, however I'm quite convinced
4) I'd be really careful about placing some external file operations
nside of a callback function..... but this depends on your overall
application purpose and design.
Best regards
Waldek
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