Void *

This is a discussion on Void * within the C Programming forums, part of the General Programming Boards category; I have a scenario in which user types int,float or double. i use void pointers and pass it to a ...

  1. #1
    dpp
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    Void *

    I have a scenario in which user types int,float or double.
    i use void pointers and pass it to a function.

    Code:
    void get (void * elm)
    {
    
    
    
    ---------------
    
    }
    Is there any way to get the size of the element in the get function (for char :1 etc...)
    ofcourse if we pass another parameter to the get function while calling this can be done.
    But my question is whether can i get the size without pass the size to the function.

  2. #2
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    The 2 most straightforward things to do would be the following:

    1) do as you yourself suggested and pass an additional argument
    2) pass a struct containing type and void * (struct Value { enum type, void *val })

    Note to the moderators: board won't let me post because of my inline (not-necessarily-syntactically-correct code sample) above, instead demanding code tags. This is *not* an improvement. And as you can see, easy enough to circumvent. MUHAHAHA.

  3. #3
    C++まいる!Cをこわせ! Elysia's Avatar
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    MWAAAHAAA, it's to stop newbies from posting code without code tags.
    How THEY do to circumvent it, I don't know. But I know it's possible.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

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