C: Function pointer inside a typedef struct

Question

I am trying to create a linked list in C but trying to pack it nicely in somewhat of a C++ style class. I am having some issues however using function pointers in C.

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Answer 1

You need to assign the function to the member. i also recommend giving them different names:

typedef void (*addMSGFunc)(unsigned char *, int, struct linkedList *);

typedef struct linkedList {
    int count;
    struct msgNode *front;
    struct msgNode *back;
    addMSGFunc addMSG;
} msgList;

void addMSGImpl(unsigned char *data, int size, struct linkedList *self)
{
    ...
}

And then after creating a msgList:

msgList myList;
myList.addMSG = addMSGImpl;