How can I check my byte flag, verifying that a specific bit is at 1 or 0?

Question

I use a byte to store some flag like 10101010, and I would like to know how to verify that a specific bit is at 1 or 0.

Answer 1

If you are using C++ and the standard library is allowed, I'd suggest storing your flags in a bitset:

#include 
//...
std::bitset<8> flags(someVariable);

as then you can check and set flags using the [] indexing operator.