data formatting

[BigDaz]

if i have a 16-bit integer (i.e. 12345) and i want to send it via tcp/ip how can i send it as two 8-bit bytes and not as 5 char bytes (i.e. '1', '2', '3', '4', '5')?

how can i format the integer before sending so that it takes up as little space as possible?

thanks, bigdaz

 

[fheyn]

Try this :
create union containing two chars, then send the two chars.

 

[mingis]

fheyn is right, but you must care, that on both sides representation of integers are the same - depending on processor type order of lower and higher bytes can differ.

 

[mingis]

branyesz in
thread116-352512 more correct - better approach is to send
value & 0xFF
first and then
value >> 8
Received bytes must be collected as
first_byte | (second_byte << 8)