PLEASE HELP - Can someone please explain the output of this code?

Question

https://code.sololearn.com/cRCcXLp8Y76s/?ref=app

The output of this code is 1021.

Can someone please explain why? Please be specific and go through all steps of the code.

NOTE: I didn’t write this code. Credit goes to Naveen Kumar

Answer 1

you create ptr as pointer to x
when you do ptr++ the pointer moves one place in memory and it points somewhere ...
so x remains 10

you create ref as reference to y
that means it behaves as if it was one variable
changes in ref are done in y
so y is incremented and it is 21

Answer 2

yes, you only move the pointer away
if you did
(*ptr)++;
it would increase x, because *ptr is the value
ptr is a memory address

Answer 3

So when it says ptr++ it doesn’t increase because changing pointer doesn’t affect the x?

Answer 4

Thanks a lot Michal!

Answer 5

@michal can you please go to this link?

https://www.sololearn.com/Discuss/1232575/please-explain-the-output-of-this-code

It's another question that I have. Thanks!