I didn't get clear in ±+x,x++

Answer 1

https://www.sololearn.com/Discuss/407846/?ref=app

Answer 2

++x adds before using it. x++ adds after using it

Answer 3

hi pls refer this code

https://code.sololearn.com/cz2V1en5lgLk/?ref=app

Answer 4

in calculations we need to follow right to left