The popular social network Facebook was founded by Mark Zuckerberg and his classmates at Harvard University in 2004. At the time, he was a sophomore studying computer science. Design and implement an application that maintains the data for a simple social network. Each person in the network should have a profile that contains the person's name, optional image, current status, and a list of friends. Your application should allow a user to join the network, leave the network, create a profile, modify the profile, search for other profiles, and add friends.