Creating a binary to decimal converter using while loop

Answer 1

I've made such a code, but it uses do while loop.
https://code.sololearn.com/cWRp46gtqnSv/?ref=app
Edit: I'd putted the opposite code before, now see my code.

Answer 2

Binary to Decimal (Base 2 to Base 10) converter in Python using a while loop.
https://code.sololearn.com/cP7R90XFv7kE/?ref=app

Answer 3

I have also created a code in c++ to convert decimal into binary.
It uses only while loops and conditions.

https://code.sololearn.com/cbakwV7EX6p1/?ref=app