Array with a structure

Here is my problem. I have to create a data structure to overlay an array of unsigned 8-bit values with a floating point variable.

I'm pretty sure I have to use a structure/union, but I don't know where to begin with this. Any pointers, guys?

Could you clarify the question?

Are you trying to share the same memory with different variables? If so, you're on the right track.

My previous was pointing to some other topic which is called as BitField which is not what u where asking. Sorry about never read your post properly. About the struct overlay.

Well, what is your application of using this overlay, I would be normally used to overlay a register while programming embedded systems. I use it while programming my board. So what is the application of using that in your case.

ssharish

Code:

union test
{
   unsigned char u[8];
   float f;
};

Like that?

Too many chars for a 32-bit float.

Originally Posted by MacGyver

Too many chars for a 32-bit float.

Who said 2 members of the union should be of the same size?

Originally Posted by vart

Who said 2 members of the union should be of the same size?

They don't have to be, but if you want to overlay one float with the same number of unsigned char's, then it's kind of useful if the union's members are all the same size.

--
Mats

Yes, that's what I meant. Thanks, matsp.