Help needed with hex part in c++

Question

I made the code to accept any binary input to convert to octal and hexadecimal but it seems the hexadecimal outputs 0, But when I comment the octal part out it gives me a correct hexadecimal number.
LInk to code:

https://code.sololearn.com/c8a6A25a0a15

Answer 1

As Jazz said, your problem is with the bn

If you add another varible for the second loop it works well

https://code.sololearn.com/cnEZIYPAGyN8/?ref=app

Answer 2

Thank you guys