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Calling Function via function pointer inside a structure pointer

This is a discussion on Calling Function via function pointer inside a structure pointer within the C Programming forums, part of the General Programming Boards category; I'm trying to call a function via a function pointer, and this function pointer is inside a structure. The structure ...

  1. #1
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    Calling Function via function pointer inside a structure pointer

    I'm trying to call a function via a function pointer, and this function pointer is inside a structure. The structure is being referenced via a structure pointer.
    Code:
    position = hash->(*funcHash)(idNmbr);
    The function will return an int, which is what position is a type of. When I compile this code, I get the error: error: expected identifier before ‘(’ token.
    Is my syntax wrong? I'm not sure what would be throwing this error.

  2. #2
    SAMARAS std10093's Avatar
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    Too many words, too little code. I am fan of code, not words (even though you may give all the information needed via words). Post some code. Do not worry, nobody is going to steal your code :P
    Code - functions and small libraries I use


    It’s 2014 and I still use printf() for debugging.


    "Programs must be written for people to read, and only incidentally for machines to execute. " —Harold Abelson

  3. #3
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    Code:
    struct onode* addOrder(struct hashStorage* hash, struct order* data) {  
      struct onode *newOrder;
      int position, idNmbr;
      idNmbr = data->id;
      newOrder = newNode(data);
      position = hash->(*funcHash)(idNmbr);
    }

  4. #4
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    Just use
    Code:
    position = hash->funcHash(idNmbr);
    Bye, Andreas
    Otto45 likes this.

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