allocating for structures

This is a discussion on allocating for structures within the C Programming forums, part of the General Programming Boards category; I have the following struct.. Code: struct test { int id; struct test *prev; struct test *next; unsigned char * ...

  1. #1
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    allocating for structures

    I have the following struct..

    Code:
    struct test {
      int id;
      struct test *prev;
      struct test *next;
      unsigned char * type;
    };
    
    struct test *first_test;
    Now when I initialize first_test I allocate memory...

    first_test = malloc(sizeof(test));

    When I free the memory (assume I've assigned values for all the parts of the struct) is the following sufficient?

    free(first_test);

    or do I need to...

    free(first_test->type);
    free(first_test->prev);
    free(first_test->next);
    free(first_test);

  2. #2
    Registered User carrotcake1029's Avatar
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    398
    free(first_test->type);
    free(first_test->prev);
    free(first_test->next);
    free(first_test);
    You will need to do that. But be sure to do the same to the structs inside of your struct though before you free the top-most struct. Make sense? lol

  3. #3
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    well actually when I free one, I'll be sticking the prev and next together to re-link the list.

    But I know what you mean. Thanks!

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