Reverse of a number with leading zeroes

Question

How do we reverse a number with leading zeroes in number ? For ex: If input is 004, output should be 400.

I wrote below program but it works only when n

Answer 1

Replace your while loop with a for loop with the same number of runs as you wish the original number has digits (including leading zeros). e.g. 004 would require the loop to be run 3 times, and not to terminate prematurely once x == 0.