Re: Misc C question

["mike" <ruler@isolate.net>]

Hi,

"r" is for readonly, if you don't include what it should do with the file,
you will get an error on compile. :)  The possible options are "r", "w",
"r+" "w+", and more.  You should consult a book/website which will explain
everything you need to know about them :)

Also after you fopen(); you should always fclose(); somewhere after :)

And, no, the call won't return NULL if you don't have "r", it simply won't
compile, and can't give you anything ;)

Thanks.
----- Original Message -----
From: "xmp" <xmp@multipasto.net.co>
To: "mike" <ruler@isolate.net>
Cc: <linux-c-programming@vger.kernel.org>
Sent: Thursday, June 20, 2002 12:44 AM
Subject: Re: Misc C question


> > Basically, you could use the fexist() function (I think that's what its
> > called), or the way most people do it..
> > FILE *blah;
> > if ((blah = fopen("/path/to/file, "r")) != NULL) {
> >     printf("File does not exist.");
> >     exit(0);
> > }
> hi, thanks for reply me.
> About your example, What happens if the file exist and you dont have "r"
permission? the call will return NULL?.
>
> bye
>
>
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