opening other files using C

[mohdalibaig]

Is it possible to open other files in C during main() execution.
Example, i want to open a wave file that generates a sound when ever
main() function is called.

[Chris Dollin]

mo*********@gmail.com wrote:

Is it possible to open other files in C during main() execution.

Yes.

Your C book surely mentions this?

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"It took a very long time, much longer than the most generous estimates."
- James White, /Sector General/

[Richard Heathfield]

mo*********@gmail.com said:

Is it possible to open other files in C during main() execution.

Yes. Look up fopen, fclose, fread, fwrite, fseek, ftell, fgetpos,
fsetpos, fputc, fgetc, getc, putc, fgets, fputs, fscanf, fprintf, feof,
ferror, and no doubt a few I've forgotten.

Example, i want to open a wave file that generates a sound when ever
main() function is called.

Opening the file is easy. Playing the sound is harder, and C has no
standard way to generate sounds (unless you count writing '\a' to
stdout, which doesn't apply in this case). You'll need to ask how to do
this in a newsgroup dedicated to your implementation.

--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999
http://www.cpax.org.uk
email: rjh at the above domain, - www.

[osmium]

<mo*********@gmail.comwrote:

Is it possible to open other files in C during main() execution.
Example, i want to open a wave file that generates a sound when ever
main() function is called.

It's possible you used the wrong magic words (open) Look up system() in
<stdlib.h>, it may be what you want..

[CBFalconer]

osmium wrote:

<mo*********@gmail.comwrote:

>Is it possible to open other files in C during main() execution.
Example, i want to open a wave file that generates a sound when
ever main() function is called.

It's possible you used the wrong magic words (open) Look up
system() in <stdlib.h>, it may be what you want..

Nonsense. Look up fopen and fclose in the standard library. Also
FILE*.

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[osmium]

"CBFalconer" writes:

osmium wrote:

><mo*********@gmail.comwrote:

>>Is it possible to open other files in C during main() execution.
Example, i want to open a wave file that generates a sound when
ever main() function is called.

It's possible you used the wrong magic words (open) Look up
system() in <stdlib.h>, it may be what you want..

Nonsense. Look up fopen and fclose in the standard library. Also
FILE*.

Now you've added mind reading to your vast repertoire of talents?

It seems quite plausible that he wanted to generate a sound when main was
entered. Windows has terminology which encourages such use, point at a
*data* file and you can get a menu item that says "Open", which has the
meaning "Execute the program associated with this file extension".

If *I* wanted to open a file, I can't imagine ever being so young that I
would have included the word "main" in my question. Main has nothing to do
with anything of interest. I hope the OP will make clear what he really
wanted to know.

And even if you are right, there are less obnoxious and abrasive words to
use than "nonsense" to describe your exalted conclusions.

[Richard Tobin]

In article <46***************@yahoo.com>,
CBFalconer <cb********@maineline.netwrote:

>>Is it possible to open other files in C during main() execution.
Example, i want to open a wave file that generates a sound when
ever main() function is called.

>It's possible you used the wrong magic words (open) Look up
system() in <stdlib.h>, it may be what you want..

>Nonsense. Look up fopen and fclose in the standard library. Also
FILE*.

The post you replied to was questioning whether the OP meant something
different by "open". In which case system() might well be the right
solution.

-- Richard
--
"Consideration shall be given to the need for as many as 32 characters
in some alphabets" - X3.4, 1963.

[J. J. Farrell]

On Jun 9, 10:53 am, CBFalconer <[e-mail]:

osmium wrote:

<[e-mail]:

Is it possible to open other files in C during main() execution.
Example, i want to open a wave file that generates a sound when
ever main() function is called.

It's possible you used the wrong magic words (open) Look up
system() in <stdlib.h>, it may be what you want..

Nonsense. Look up fopen and fclose in the standard library. Also
FILE*.

What makes you so certain it is nonsense? It makes perfect sense to
me. The original question seemed odd - how could anyone question
whether files could be opened in a major language like C? Osmium's
guess as to the real meaning of the question rings true, since in many
UI environments these days "opening" a file implies executing a
program which does something vaguely appropriate with the contents.
This concept of "opening" a file is complex, and it's not obvious how
to do it from a look at a C text book or the web. Unless the OP is
incredibly lazy or stupid, it seems much more likely that he's asking
about this rather than fopen, and has simply used terminology which is
not entirely appropriate in a C context.

[CBFalconer]

"J. J. Farrell" wrote:

On Jun 9, 10:53 am, CBFalconer <[e-mail]:

>osmium wrote:

>><[e-mail]:

>>>Is it possible to open other files in C during main() execution.
Example, i want to open a wave file that generates a sound when
ever main() function is called.

>>It's possible you used the wrong magic words (open) Look up
system() in <stdlib.h>, it may be what you want..

Nonsense. Look up fopen and fclose in the standard library. Also
FILE*.

What makes you so certain it is nonsense? It makes perfect sense to
me. The original question seemed odd - how could anyone question
whether files could be opened in a major language like C? Osmium's
guess as to the real meaning of the question rings true, since in many
UI environments these days "opening" a file implies executing a
program which does something vaguely appropriate with the contents.
This concept of "opening" a file is complex, and it's not obvious how
to do it from a look at a C text book or the web. Unless the OP is
incredibly lazy or stupid, it seems much more likely that he's asking
about this rather than fopen, and has simply used terminology which is
not entirely appropriate in a C context.

Well, I tend to take words in the standard meaning. I never even
considered the other alternative.

--
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[llothar]

On 10 Jun., 05:41, CBFalconer <[e-mail]:

So what do you not understand in:

"It's possible you used the wrong magic words (open)" if you take
words seriously.

Well maybe this time it was harder for you because your usual
sentences "This is offtopic", "This is not standard C" do not match
here.

[Richard]

"osmium" <r1********@comcast.netwrites:

"CBFalconer" writes:

>osmium wrote:

>><mo*********@gmail.comwrote:

Is it possible to open other files in C during main() execution.
Example, i want to open a wave file that generates a sound when
ever main() function is called.

It's possible you used the wrong magic words (open) Look up
system() in <stdlib.h>, it may be what you want..

Nonsense. Look up fopen and fclose in the standard library. Also
FILE*.

Now you've added mind reading to your vast repertoire of talents?

It seems quite plausible that he wanted to generate a sound when main was
entered. Windows has terminology which encourages such use, point at a
*data* file and you can get a menu item that says "Open", which has the
meaning "Execute the program associated with this file extension".

If *I* wanted to open a file, I can't imagine ever being so young that I
would have included the word "main" in my question. Main has nothing to do
with anything of interest. I hope the OP will make clear what he really
wanted to know.

And even if you are right, there are less obnoxious and abrasive words to
use than "nonsense" to describe your exalted conclusions.

This CBFalconer chap does seem to have a very high opinion of himself
and his not so impressive C libraries which he continually pimps.

[CBFalconer]

llothar wrote:

CBFalconer <[e-mail]:

So what do you not understand in:

"It's possible you used the wrong magic words (open)" if you take
words seriously.

Well maybe this time it was harder for you because your usual
sentences "This is offtopic", "This is not standard C" do not match
here.

Totally meaningless. You omitted the quotations.

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cbfalconer at maineline dot net
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[Robbie Hatley]

"mohdalibaig" wrote:

Is it possible to open other files in C during main() execution.
Example, i want to open a wave file that generates a sound when ever
main() function is called.

Assuming Windows 2000 DOS prompt:

int main(void)
{
system("winamp.exe Billy-Joel.wav"); // assumes files are in path
return 0;
}

For other OSs, RTFM.

Or better yet, just buy an ipod.

If you mean, can you open a wav file in your own C program, process
it, and play it back as a sound, the answer is no. The fact that
you asked the question means you have many years of learning to do
before you advance to that level. I don't get the impression that
you're quite ready to go to work for Winamp or Sonique or Microsoft
or Apple quite yet. You'd have to learn all about the sound API for
the OS you want to write for, then spend months practicing, before
you could write fully functional audio applications.

If you really want to pursue this, ask your question in a newsgroup
for your OS. It's really an OS API question, not a C question.

--
Cheers,
Robbie Hatley
lonewolf aatt well dott com
triple-dubya dott tustinfreezone dott org