Incrementing in C++ - When to use x++ or ++x?
I'm currently learning C++ and I've learned about the incrementation a while ago. I know that you can use "++x" to make the incrementation before and "x++" to do it after.
Still, I really don't know when to use either of the two... I've never really used "++x" and things always worked fine so far - so, when should I use it?
Example: In a for loop, when is it preferable to use "++x"?
Also, could someone explain exactly how the different incrementations (or decrementations) work? I would really appreciate it.
Answer
It's not a question of preference, but of logic.
x++ increments the value of variable x after processing the current statement.
++x increments the value of variable x before processing the current statement.
So just decide on the logic you write.
x += ++i will increment i and add i+1 to x.
x += i++ will add i to x, then increment i.