What's wrong in this code..??

Question

Profit and loss in c++
https://code.sololearn.com/cXpF1chRDnO9/?ref=app

Answer 1

There's just a subtle between the two, in case you're interested.

https://www.sololearn.com/Discuss/650395/?ref=app

Answer 2

The meaning of \n is same as in C, right???

Answer 3

Which one will be better as a programmer