Write a C function to swap all odd and even bits in an unsigned integer. Bit positions 0, 2, 4, … are considered even bits, and positions 1, 3, 5, … are odd bits.

Ex input: 10101010 (in binary),
Expected O/P: 01010101.

It may look simple at first, well, like just outputting its complement, but is that right?
What if the input is 11010010?

How would you proceed with this question?