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Schkhan
Schkhan
Last Activity: Mar 31 '08, 02:05 PM
Joined: Mar 30 '08
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  • Schkhan
    replied to type casting a pointer (to a structure) to a pointer (to a different structure)
    in C
    Many thanks for your reply. Let me clarify things a little bit,
    these are two completly different structures. the initial point of confustion is in the macro,
    #define TEST_MACRO(firs t) ((struct second *) &first[1])

    it essentially returns a pointer to a structure of type "second", but why they are using an index value, i mean they could have done it like
    #define TEST_MACRO(firs t) ((struct second...
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    • Schkhan
      started a topic type casting a pointer (to a structure) to a pointer (to a different structure)
      in C

      type casting a pointer (to a structure) to a pointer (to a different structure)

      Hi,
      I am sturggling with a peace of code mainly its about casting a pointer to one type of structure to a pointer to another type of structure.

      the confusion begins with the following line...(modifie d to highlight the actual prob)

      #define TEST_MACRO(firs t) ((struct second *) &first[1])

      /*here it would return a pointer to second, but the question is why it uses [1]
      Here in this example...
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