Thread: Pointing to arbitrary location

  1. #1
    Registered User
    Join Date
    Jul 2007

    Pointing to arbitrary location


    How would I assign a pointer an arbitrary random value like 1234. I want to re point the pointer I don't want to change the value it is pointing to.

    I tried and cant really get much to compile. I got this to compile but it doesn't work right:

    int *a=0;
    int b;


    I was thinking I could create two pointers and point one to the other and reassign that way but I cant get it to compile like this:

    int *a;
    int *b;

    Any help appreciated.


  2. #2
    Registered User
    Join Date
    Jul 2007
    I got it figured out. Use int **a; to point to a pointer

  3. #3
    Join Date
    Oct 2007
    Inside my computer
    Quote Originally Posted by elmutt View Post
    int *a;
    int *b;
    This won't compile... Or shouldn't, at the very least. And if it does, it will crash.
    And what you actually do is:
    int* p = (int*)1234;
    Not that it will do you any good...
    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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