How do you use #define?

Question

I\'m wondering about instances when it makes sent to use #define and #if statements. I\'ve known about it for a while, but never incorporated it into my way of coding. How e

Answer 1

Is #define the only thing that determines if the code is included when compiled? If I have #define DEBUGme as a custom symbol, the only way to exclude it from compile is to remove this #define statement?

You can undefine symbols as well

#if defined(DEBUG)
#undef DEBUG
#endif