Regarding goto:

Here is a piece of code from the demo app for the TCP/IP stack from Microch=
ip:

  ...
  // Read all browser POST data
  while(curHTTP.byteCount)
  {
    // Read a form field name
    if(HTTPReadPostName(curHTTP.data, 6) !=3D HTTP_READ_OK)
      goto ConfigFailure;
		=09
    // Read a form field value
    if(HTTPReadPostValue(curHTTP.data + 6, sizeof(curHTTP.data)-6-2) !=3D  =
      =20
HTTP_READ_OK)
      goto ConfigFailure;

    //some more test cases here which all jumps to ConfigFailure on failure
  }

  // do something if all is ok here
  return HTTP_IO_DONE
ConfigFaulure:
  // Do something else on failure here
  return HTTP_IO_DONE
}
	=09
Of course this could be handled without goto but it seems like a good way t=
o=20
handle this with a goto here. I guess it all depends on how the goto is use=
d.

/Ruben

>=20
> Just to claim a bit of authority, I get paid to write code in C (and C++,
> C#), including embedded code (it's a while since I've done any with PICs =
so I'll
> leave the rest of the questions to others) and have been writing C for 25=
 years.
> I don't think I have ever used a goto in C - there is always some other w=
ay
> which will almost certainly result in better code structure. I don't have=
 coding
> standards in front of me at the moment, but I'm sure they would say that =
goto
> statements are not allowed - using one would doubtless fail the first pee=
r
> review. If you feel you have to use one, then maybe you need to consider =
how
> good the structure of your code is.
>=20
> John is correct that I would also have no idea of the syntax involved in
> using a goto - to be honest I'd pretty much forgotten they even existed.
>=20
> Yes of course if you are writing assembly you have to use goto statements
> as there is no other choice, but even there I'm writing my code structure=
d
> in such a way that goto statements are simply being used to create loops
> (like a for loop) or exit loops (like a while statement), and it helps a
> lot if you do write code in an organised way like that rather than flying
> control all over the place.
>=20
> Challenge for anybody - show me a bit of C code which needs to have a got=
o
> statement which couldn't be better coded without one...
>=20
> Chris
> --=20
> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>=20
>=20
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>=20



=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Ruben J=F6nsson
AB Liros Electronic
Box 9124
200 39 Malm=F6 Sweden
Tel +46 40142078
ruben@rjjournal.net
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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.