-=> Quoting Paul Wankadia to All <=-

Hi Paul,

PW> Hey, everyone -- how do I write a struct to a stream?  E.g.  if
PW> I had a struct like this :

PW> Typedef struct Block1024 {
PW>      unsigned char Packet_no;
PW>      unsigned char Data[1024];
PW>      unsigned long CRC;
PW> };

PW> and then went

PW> Block1024 Packet;

PW> (to create a struct called Packet, of typedef struct Block1024),
PW> how would I then write it to a stream?
PW> Say, to the screen, to disk or to a COM port?

Try something like this:

 fwrite(&Packet, sizeof (Block1024), 1, stdout)

or even

Block1024 Packets[];

 fwrite(Packets, sizeof (Block1024), n, stdout)

where n is the number of packets to write.

Note that your Block1024 structure will require padding bytes on
some architectures.  If you have control over the data structure,
you may want to reorder like so:

 Typedef struct Block1024 {
      unsigned long CRC;
      unsigned char Data[1024];
      unsigned char Packet_no;
 };

It may still require padding (somewhere :) at the end.

Michael Stapleton of Graphic Bits.

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