In C Please:

Write a program that allows for the following:

1. using function named unsigned long bytes(unsigned long num){}

2. ACCEPTS user input: a 8 byte integer.

3. with this 8 byte int, swap bytes 1, 2 and 3,4, and 4,5,6, and 7,8.

and then returns the output to the user.

for example:

INPUT: 12345

Expected Value: 1004523