Thread: Working with memory addresses

For some time, I`ve been using Cheat Engine to cheat on games, its pretty fun .
This program is modifying memory addresses, like health, money etc.

Anyway I became curious about it, I searched on google about how it works, and stuff like that. But I wasn`t able to find anything. The only thing I know about it, it`s that it has to do with pointers ...

The memory addresses are shown in HEX. If I`d want to make my own cheat engine, would I have to use HEX in my code too ? If so, how ?

I`m very confused and I appreciate every piece of knowledge... So if you got any idea, please post it here ...

Thanks in advance!

P.S. I`m not English ( nor American ), therefore, I guess I made some mistakes in my post. Please let me know if you spot any, so that I can correct myself right away.
Thank you very much, in advance, again !