*Deleting* Files Using C++

This is a discussion on *Deleting* Files Using C++ within the C++ Programming forums, part of the General Programming Boards category; Hi. I have a question about deleting a few. Here is a scenario. The program first asks the user to ...

  1. #1
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    *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:ut);

    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

  2. #2
    ATH0 quzah's Avatar
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    remove( )

    Quzah.
    Hope is the first step on the road to disappointment.

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    Thanks.

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

    Kuphryn

  4. #4
    _B-L-U-E_ Betazep's Avatar
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    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:")
    Blue

  5. #5
    ATH0 quzah's Avatar
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    Actually:

    remove( "filename" );

    Quzah.
    Hope is the first step on the road to disappointment.

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    Okay.

    Thanks guys.

    Kuphryn

  7. #7
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    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

  8. #8
    zen
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    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.
    zen

  9. #9
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    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

  10. #10
    zen
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    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).
    zen

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