In the end, it's very simple and intuitive. 1- If you need arithmetic, use signed; if you need a bitmask, use signed. C is not assembly, and bit shift is no mu

In the end, it's very simple and intuitive. 1- If you need arithmetic, use signed; if you need a bitmask, use signed. C is not assembly, and bit shift is no multiplication nor division. 2- Make sure you stay within bound, as in: don't even think you can approach the boundaries. C is not assembly, and overflow flag does not exist.