Resize an array

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  1. #1
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    Question Resize an array

    How would I resize an array at runtime? I'm using VC++6.0

  2. #2
    End Of Line Hammer's Avatar
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    If you declare your array something like this:
    char myarray[100];
    then the answer is you can't resize it.

    To do dynamic resizing, you need a dynamically created array. Lookup the new keyword.
    When all else fails, read the instructions.
    If you're posting code, use code tags: [code] /* insert code here */ [/code]

  3. #3
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    My preferred method:

    long *array = (long*) malloc(width * height * sizeof(long));

    then to access, use like a one dimensional array
    array[(y * width) + x] = 4;

    When done (MUST do this at end of app):
    free(array);

    There are other ways like using the New operator but I prefer to use malloc, for some reason.
    malloc is in stdlib.h
    - Tigs

  4. #4
    C++ Developer XSquared's Avatar
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    >>To do dynamic resizing, you need a dynamically created array. Lookup the new keyword.

    Or look up STL Vectors.
    Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah

    You. Fetch me my copy of the Wall Street Journal. You two, fight to the death - Stewie

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