Difference between ex-plus (++a) and post-self-add (a++)

Self-addition is the operation of adding 1. For example a++ is a+1, variable a becomes the value of a+1.

If it is simply doing a++, or ++A statement, the effect is the same.

But if you embed it in a complex statement, such as B = a++, and B = ++a, the value of B is not the same.

First understand a++, a self-increment, and then get the value of a.

Again understand ++a,a first unchanged, then self-increment, and then get a value.

So I can understand that if the initial value of a is 5;

b=a++, the final value of B is the value of 5,a becomes 6.

And B=++a, B is called the initial value of a, so B is still equal to 5.

This makes it possible to understand other complex operations.

Difference between ex-plus (++a) and post-self-add (a++)