Question

I need to take a message from recv, write it to a text file, then be able to reproduce the message using the contents of the text file. If I just cast each character in the array to an unsigned char and write it to the text file will I be able to pull it back out in a usable format? Or do I have to do some kind of conversion before or after I write/read the file?

Answer 1

Sure it will. Just make sure open your file in binary mode so the RTL doesn’t mangle your message.

ofstream f("file.txt", ios_base::out | ios_base::binary);
f.write(data, len);
f.close();

Later…

ifstream f("file.txt", ios_base::in | ios_base::binary);
f.read(data, len);
f.close();