Retrieve specific data from text for edit

This is a discussion on Retrieve specific data from text for edit within the C Programming forums, part of the General Programming Boards category; turbo c++ 4.5 compiler Win ME ----- I'm using fprintf to store the data this is the content of .txt ...

  1. #1
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    Question Retrieve specific data from text for edit

    turbo c++ 4.5 compiler
    Win ME

    -----
    I'm using fprintf to store the data
    this is the content of .txt

    Ryo Sakazaki
    123 pacific parkway
    25
    Japanese

    Abc
    22, mountainview
    20
    Irish

    def ga
    45, bla bla
    19
    Chineze.

    Question..
    1) How do i retrive the second record for edit n then save it to the same location?
    I have no idea how to make t works. Could some 1 pls help me by providing me an example codes.

    thanks

  2. #2
    the hat of redundancy hat nvoigt's Avatar
    Join Date
    Aug 2001
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    Hannover, Germany
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    3,139
    You cannot change only one line in the file if it has no fixed length.

    You need to read the whole file, make your changes, and print the whole file again.
    hth
    -nv

    She was so Blonde, she spent 20 minutes looking at the orange juice can because it said "Concentrate."

    When in doubt, read the FAQ.
    Then ask a smart question.

  3. #3
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    you could use a structure to store a record and malloc to store the file temporarily till you make the changes, close the file, open again for writing and store back from malloc to file.

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