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0D0A character grouping?

This is a discussion on 0D0A character grouping? within the C++ Programming forums, part of the General Programming Boards category; Hi all, I'm trying to read a file that is in byte format then append it onto another file. I'm ...

  1. #1
    That weird Java guy xniinja's Avatar
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    0D0A character grouping?

    Hi all,

    I'm trying to read a file that is in byte format then append it onto another file. I'm doing this with unsigned char variable types because they're always one byte. Since the format is simply using bytes, they don't care about the character representation. However, when I read the characters in then put them out again, the '/n' character is always preceded by the '/r' character. In hexadecimal this looks like 0D0A. I have no control of this, and it seems as if it's being done automatically by the ofstream.put() function.

    So, is there a way to take away this appending of characters and simply writing the raw data to the file?

    Thanks.

  2. #2
    - - - - - - - - oogabooga's Avatar
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    Quote Originally Posted by xniinja View Post
    However, when I read the characters in then put them out again, the '/n' character is always preceded by the '/r' character. In hexadecimal this looks like 0D0A. I have no control of this, and it seems as if it's being done automatically by the ofstream.put() function.
    Open the file in binary mode. Text mode on Windows converts 0D0A to 0A on input and 0A to 0D0A on output.
    stahta01 likes this.
    The cost of software maintenance increases with the square of the programmer's creativity. - Robert D. Bliss

  3. #3
    That weird Java guy xniinja's Avatar
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    Well, I'll be damned. That exists. Thanks for the help.

    To anyone else stumbling upon this thread, binary mode looks like this:

    Code:
    ofstream file ( "filename", ios::binary|ios::out );

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