Perl III Problem Set:

1.  Create a script that divides two numbers provided on the command line.
	Two numbers are required.
	Numbers have to be positive.
	Divisor cannot be zero.

	Write the quotient to STDOUT
	Write any errors to STDERR
	Redirect STDOUT to an output file (out.txt)
	Redirect STDERR to an error file (err.txt)


2. Create a script that uses <> to take in the contents of a file.
	Calculate the length of each line and print to STDOUT
	Modify your script to also print the average line length to STDOUT

3. Open a file using the open function.
	Make all the letters in each line uppercase. (There's a built-in
    Perl function which will do this.)
	Write out to a new file that was created using the open function.