So... X++ increase the value, and ++X decrease the value ?

Question

Help me to understand, when can ai used ++X

Answer 1

X++ and ++X increase while x-- and --x decrease.

they are the same when they are alone, but when in comparative statements or in assigning, things change. y = X++ here y would have the old value of x, then the value of x goes up. with y = ++x, the value of x goes up and its new value is assigned to y

EDIT:
The same goes for comparing.

Answer 2

(x++ & ++x increase) (--x & x-- decreases )