ios::binary.... a discussion (mostly)

This is a discussion on ios::binary.... a discussion (mostly) within the C++ Programming forums, part of the General Programming Boards category; The output I get : -------------- Name=ginoitalo Date=9 Phone=13281 -------------- End of file = 88 Size of applicant = 88 ...

  1. #16
    Something Clever ginoitalo's Avatar
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    The output I get :

    --------------
    Name=ginoitalo
    Date=9
    Phone=13281
    --------------

    End of file = 88
    Size of applicant = 88

    Records in file=1

    --------------
    Name=ginoitalo
    Date=9
    Phone=13281
    --------------

    So, why aren't we getting the same output ?

    I'm interested

  2. #17
    Registered User xds4lx's Avatar
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    Now your second version runs fine, Im not basing you but your first one didnt work, evident by the screen i posted. On some systems if you try to read from a fstream object that was declared as in and out then it will mess up and read garbage.
    "only two things are infinite, the universe and human stupidity, and im not sure about the former." - albert einstein

  3. #18
    Something Clever ginoitalo's Avatar
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    That's odd,
    since fstream is ostream & ifstream
    I guess in theory it should work fine
    but (as always) in testing it doesn't always pan out.

    Nice Post Everyone

  4. #19
    Registered User xds4lx's Avatar
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    In a perfect implementation it should, but when you are talking about microsoft then you shouldnt have high expectations and expect full functionality.
    "only two things are infinite, the universe and human stupidity, and im not sure about the former." - albert einstein

  5. #20
    Registered User WebSnozz's Avatar
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    Question

    If I wanted to save a STL map object in binary format and then when the program is run later how would my program tell how many bytes to read in? Would I have to right a int to difine how many bytes then write my map to file so that I could read the size of the map back in so I'd know what size of map was going to be?
    Would that work and/or is there an easier way?
    WebSnozz-
    Cats have no butt cheeks.
    If one farted, then it would make a flute noise.

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