Write a program to keep track of conference attendees. For each attendee,your program should keep track of name, company, state, and email address. Your program should allow users to do things such as add a newattendee, display information on an attendee, delete an attendee, list thenames and email addresses of all attendees, and list the names and emailaddresses of all attendees from a given state. The attendee list should bestored in a file and loaded when the program starts

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