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Does this function pointer make sense?

Started by Sagar_Indurkhya Apr 22, 2006 at 2:25 PM 5 replies 900+ views

Original Post

Apr 22, 2006 at 2:25 PM

I've been trying to get this right but I am having a lot of trouble: double (*inputFunc)((list) &); this is suppose to be a function pointer to a function that might look like:


double haha(list<double> &x)
{
  // do stuff to x
  return 0.0;
}

Is this correct? The compiler disagrees with me, but I don't know what I should do to correct it(and I have not had too much exposure to function pointers).

Programmer One

Apr 22, 2006 at 2:29 PM

Quote:
Original post by Sagar_Indurkhya
double (*inputFunc)((list) &);

Well thar's yar problem. You forgot yar typedef.

typedef double (*inputFunc)((list) &);

Coward

Apr 22, 2006 at 2:32 PM

Maybe the GP forum would be more apropriate?

CTar

Apr 22, 2006 at 2:41 PM

Quote:
Original post by Programmer One
Quote:
Original post by Sagar_Indurkhya
double (*inputFunc)((list) &);

Well thar's yar problem. You forgot yar typedef.

typedef double (*inputFunc)((list) &);

Shouldn't it be:

typedef double (*inputFunc)(list<double>&);

Without the extra parentheses?

nilkn

Apr 22, 2006 at 2:44 PM

I'll go ahead and throw out the obligatory recommendation for boost::function. Also, it would clean up your code a bit if you utilized the awe-inspiring power of the typedef mechanism: typdef list DoubleList.

Sagar_Indurkhya

Apr 22, 2006 at 3:23 PM

It worked! Thanks.

Sorry that its in the lounge, I thought I was in General Programming when I put it up.

LessBread

Apr 22, 2006 at 3:33 PM

Quote:
Original post by Coward
Maybe the GP forum would be more apropriate?

Yes.

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