Qualcomm Software Engineer interview questions

I applied online at QUALCOMM's website. I was emailed by a recruiter 2 weeks later. We scheduled an interview for the next week. The interview consisted of two one on one, hour sessions with Software Engineers.The people were friendly and helpful. First interviewer asked me to implement a Linked List in C, and swap the order of characters in a string without using a for loop or indexes. i.e. with pointers. Second interviewer asked about general OO principles and more general knowledge questions about programming and developing.