Write a program which prompts the user for the name of a file to
open, and then reads in the file line by line. When it has finished
reading the file it should print the lines in reverse order.
Write a program which asks the user to type the name of a file to log
their typing into, and then reads in lines and writes them into
the named file, stopping when it has read a line consisting only a "."
on a line by itself.
Write a program which copies one file to another.
The program should take two command line arguments, the first
being the source file name and the second being the destination