Thread: Pointers to functions

What are the advantages of having pointers to functions again ... and what kind of set up do they need?

Actually inheretence and polymorphism are why I ask. They were both in this "week" and I'm reading the review for the week and this code is what is throwing me off.

Code:

class PartsList
{
public:
	PartsList();
	~PartsList();
	// needs copy constructor and operator equals
	Part*	Find(int & position, int PartNumber) const;
	int		GetCount() const { return itsCount; }
	Part*	GetFirst() const;
	void	Insert(Part *);
	void	Iterate() const;
	Part*	operator[](int) const;
private:
	PartNode * pHead;
	int itsCount;
};

It's mostly the astericks that I'm tripping over ... if you need the function definitions I can edit this and put them on.

SilentStrike is correct, Those function return pointers to obj's.

Function pointers look like -

Code:

void foo(void){     printf("Foo\n");     }

int main(void){

    void (*fptr)(void);    // fptr can point to any function that is
		  // sent (void) and receives (void)

    fptr = foo;   // make the function pointer point to foo
   (*fptr)();    // call whatever fptr is pointing to and send ()

I guess so ... I didn't even realze that was a function returning a pointer ... it's so much clearer now ... thank you