You’re working for a company that’s building an email list from files of mail messages....

You’re working for a company that’s building an email list from files of mail messages. Your boss would like you to write a program that reads a file called mail.dat, and that outputs every string containing the @ sign to file addresses.dat. For the purpose of this project, a string is defined as it is by the C++ stream reader—a contiguous sequence of non-whitespace characters. Given the data

the program would output the following information on file addresses.dat:

Use meaningful variable names, proper indentation, and appropriate comments. Thoroughly test the program using your own data sets