Why prefix and postfix necessary?.

Question

what was the real intention behind prefix and postfix

Answer 1

You can live without it, but there are some examples in which it is useful

Let's say you want to iterate over an arrays elements with a while loop that only consists of one line of code

int[] arr = {1, 2, 3, 4, 5, 6, 7};
int i = 0;
while i < 7
console.log(arr[i++]);

Next time please make sure to include what language you are using; and spamming the same question twice won't help with anything

Answer 2

That was by accident posting twice... :(