Problems converting chars, byte, strings?

[ogelami]

I want my unsigned chars to be written into a file using io streams and be readable like 00 03 ab 00 cc etc.
anyone have a simple solution or even a name for this kind of converting I've tried all night -.-,
I'm starting to get really tired.

[hamsterman]

do you mean hexademical?
If yes, then you could try something like

const char number[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};

unsigned char n1 = mychar >> 4; //to get the first four bits
unsigned char n2 = mychar & 0xF; //to get the last four bits

myfile<<number[n1]<<number[n2]<<' ';

I bet there is a shorter way to do this with standard libraries though.

Hope this helps

[guestgulkan]

iostreams can do hexadecimal. See here:

http://www.cplusplus.com/reference/iostream/manipulators/

[ogelami]

The thing is that it's network packages that i want to log sort of like the same way some packetanalyzers do it:

const unsigned char* bytes = static_cast<const unsigned char*>(packet->GetData());

I want every byte from the unsigned "bytes" to be put in a file separated by spaces.
So it will look something like this: 00 10 29 AA C8 E3 etc.

I don't only want the code i want to learn something as well so i would be pleased if someone described how it works.

Thank you hamsterman this was exactly what i was looking for!

[Duthomhas]

You'll just have to insert a space after every second character. There is no library routine to do that. If you also want uppercase letters you can use the uppercase stream manipulator with the hex manipulator...

Good luck!