What are the difference between ++x and x++? And how to understand this x+=2?

Answer 1

++x increments the value of x and then returns x. On the other hand, x++ returns the value of x and then increments it.

For example:

int a=0;
System.out.print(a++);

the output will still be 0, as it uses the value of a and only then adds 1. But if we look at the following example:

int b=0;
System.out.print(++b);

the output will be 1, as it adds 1 before using the value of b... but after both codes will be executed, the value of a and b will be 1.

x += 2 has the meaning as that of x = x + 2

There are some similar posts, refer:
https://www.sololearn.com/Discuss/160327/?ref=app
https://www.sololearn.com/Discuss/160327/what-is-the-difference-between-x-x-x-and-x
https://www.sololearn.com/Discuss/336732/what-is-the-difference-between-x-and-x
https://www.sololearn.com/Discuss/305422/x-and-x
https://www.sololearn.com/Discuss/56740/what-is-the-difference-between-x-and-x

Answer 2

@Christine, just a tips, the Q&A Discussion & Code Playground has a Search feature, you can use it to find something you have interest with, learn to use it, by that you'd be doing the community a favor, by reducing duplicate questions, do tell and share this with your friends :)

Answer 3

Thank you Dev for your response in my question 😊

Answer 4

hahaha nice battle😁

Answer 5

Completed 3 Challenges uhh.. Nice

Answer 6

Where u from..

Answer 7

Nice...