Error C2109: subscript requires array or pointer type

This is a discussion on Error C2109: subscript requires array or pointer type within the C Programming forums, part of the General Programming Boards category; I am very new to C programming so this may be a silly question. I am recieving the following error ...

  1. #1
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    Question Error C2109: subscript requires array or pointer type

    I am very new to C programming so this may be a silly question. I am recieving the following error and don't know why:

    error C2109: subscript requires array or pointer type

    The code that it is pointing to are these three lines:

    tempFahr = fahr[indexOfMinFahr];
    fahr[indexOfMinFahr] = fahr[fillFahr];
    fahr[fillFahr] = tempFahr;

    Any suggestions? Thanks

  2. #2
    Code Goddess Prelude's Avatar
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    Is fahr an array? Can we see the declaration?

    -Prelude
    My best code is written with the delete key.

  3. #3
    moi
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    the error message is composed of quite clearly-spoken english. in order to use subscrpiting, you must be operating on an array or a pointer. fahr is neither of these.
    hello, internet!

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    Here are the declarations:

    double fahr[20];
    double tempFahr;
    double indexOfMinFahr;
    double fillFahr;

  5. #5
    moi
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    Originally posted by Rafiki
    Here are the declarations:

    double fahr[20];
    double tempFahr;
    double indexOfMinFahr;
    double fillFahr;
    the index of the subscript has to be of an integral type
    hello, internet!

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