C++ reversing Number using while loop and do while loop in c++ Program?

I am Written Some code in C++ that is meant to reversing Number using while loop and do while loop in c++ Program. I know this isn't the smartest way to do it but i am just trying and my experience why this program force method isn't working when i code it. Any Feedback would be very much Appreciated.

While Loop Condition

The While loop C++ is a type of loop that will first evaluate a condition if the condition is true, the program will run the code. It will then go back and evaluate the condition. Every time the condition is true, the program will perform the code inside the loop. 

The do while loop is a post tested loop using the do while loop, we can repeat the excution of several parts of the statements the do while loop is mainly used in the case where we need to execute the loop at least once.

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