What is the importance of post increment and pre increment in C++?

Question

What is the importance of post increment and pre increment in C++?

In: 7

Answer 1

On it’s own there is no difference.

x++;

and

++x;

Are the same.

The difference comes when you’re immediately using x.

int x = 1;
int y = x++;

has y being 1.

int x = 1;
int y = ++x;

has y being 2.

That’s what pre and post increment means.
In post increment, you do whatever, and then you increment.
In pre increment, you increment, and then you do whatever.