Written in C:

7. (10 points) Write a function unsigned long swap_bytes (unsigned long n); that accepts an 8-byte integer, swaps bytes 1 and 2, 3 and 4, 5 and 6, and 7 and 8 and returns the result. Sample input and expected output: n (in hex) 12345678deadbeef Expected return value (in hex) 34127856addeefbe 0 0 1 100 1004523 12345