Why value of a doesn't change in this code?

Question

https://code.sololearn.com/cHOeAv77mfKB/?ref=app

Answer 1

You are just making different pointers(ptra,ptrb) swap the variable they are pointing to.
You never changed the value that is stored at "a"

Answer 2

Your *mystery()* function is not swaping anything

Answer 3

https://code.sololearn.com/cf2iKDz16kST/?ref=app
See this. You need to dereference the pointers if you want to swap their values.

Answer 4

Thanks!!

Answer 5

Why ?is there somekind of error in it ? Or?