Oracle visited my college campus for hiring. The selection process consisted of three rounds of technical personal interviews and one HR personal interview.

• The first interview mainly covered puzzles and C basics.
• The second interview focused on Data Structures and Algorithms (BST, Stacks, Queues, Linked Lists, etc.).
• The third interview round assessed coding skills (how well you can code in C), checking syntax and coding style.
• The fourth and final HR interview was easy. The interviewer asked about my background after reviewing my resume, and that was it.

Given a linked list, write a C program to reverse it.