Break it down.
Obviously four structs contained in an array or vector.
You'll need to open each file, skip the first junk line, parse each line into your struct, then cross reference and display the info as needed.
http://www.cplusplus.com/doc/tutorial/structures/
http://www.cplusplus.com/reference/vector/vector/vector/
http://www.cplusplus.com/reference/fstream/ifstream/?kw=ifstream
http://www.cplusplus.com/reference/iostream/cout/?kw=cout
That site should be your go to bible. You should be able to pratically copy paste most of the info from that site in the example snippets and get what you need. Because you need very little.