How to write data in exist text file?

This is a discussion on How to write data in exist text file? within the C++ Programming forums, part of the General Programming Boards category; I have text file "1.txt" and there are these below hex number in text file "3688D9CC844E3F755" If I want to ...

  1. #1
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    How to write data in exist text file?

    I have text file "1.txt" and there are these below hex number in text file

    "3688D9CC844E3F755"

    If I want to add another hex number like "12B5B46CA713" at new line. How to write code to do that? Thank you.
    Last edited by ooosawaddee3; 10-19-2002 at 06:11 PM.

  2. #2
    End Of Line Hammer's Avatar
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    Start by opening a file stream... then all will become clear to you
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

  3. #3
    Just a Member ammar's Avatar
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    Thumbs up

    Use this:
    ifstream OpenFile(char *filename, int open_mode);

    set the open_mode to ios::app
    which will append what to write to the end of the file.

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