The worst is when you're teaching C and you have to explain that void * a = do_something1(do_something2(), do_something3()); is not equivalent to int

The worst is when you're teaching C and you have to explain that void * a = do_something1(do_something2(), do_something3()); is not equivalent to int b = do_something2(); int c = do_something3(); void * a = do_something1(b, c);