*Deleting* Files Using C++

Hi.
I have a question about deleting a few. Here is a scenario. The program first asks the user to enter the name of a file to take to.

ostream outFile;
outFile.open(userchoice, ios::out);

With ofstream, I found that it will create the file if it cannot find it. I tried implementing "nocreate," but VC++ 6 gave me an error that there is not such function "ios::nocreate."

Anyways, the program would create the file if it cannot find it and the file would be empty or 0 byte size. Afterward, the program calculates specific data (not worth mentioning) and outputs data to the outpuf *if applicatable*. So sometimes the program writes nothing and I would a 0 byte file under the name that the user originally entered.

I would like to know if there is a way to delete a file. So in the case above, there would be a line of code to delete the file if applicable.

Thanks,
Kuphryn

remove( )

Quzah.

Thanks.

ofstream x;
x.open(file, ios::out);
s.remove(file); // Is this a valid syntax?

Kuphryn

well

s

was never opened. :)

But I get your point and I think that is correct.


You can also use the evil system commands...

system ("deltree C:")

Actually:

remove( "filename" );

Quzah.

Okay.

Thanks guys.

Kuphryn

remove("file") works well.

There is one weird issue. the remove() function works even when I do not include "cstdio." This is also true for a few other functions. Why? Note I do not use "namespace std." Is VC++ compiler including some libraries automatically?

Kuphryn

If you include iostream, it includes istream, which includes ostream, which includes ios, which includes streambuf which includes xlocnum, which includes a few C standards header files, of which cstdio is one.

wow!!!

Thanks.

One member at GameDev mentioned that it is good practice to include the specific library head even if it will be there nonetheless. So in this case, I included "cstdio."

Kuphryn

Also, if you're concerned about exe size it's probably not a good idea to include the C++ stream headers in MSVC just to use other headers (unless you need to use C++ streams anyway).