Write a generic survey or quiz program, "survey".

The program will read a configuration file in this format:

        How old are you?  0-12; 13-19; 20-24; 25-34; 35-44; 45 or older
        What is your favorite color?  red; blue; black; other
        ...

Each question is on a separate line; the question is everything up to
and including the first '?', and the allowed responses to the question
are the following items separated by ';'.  If the last response ends
with ";;" instead of ";", any data following the ";;" is taken to be
configuration options for that question, separated by spaces.  For
example:

    How old are you?  0-12; 13-19; 20-24; 25-34; 35-44; 45 or older;; OPTIONAL
    What is your favorite color?  red; blue; black;; ALLOW_OTHER

It is up to you to decide what options, if any, should be supported.

The program will then prompt the user with the questions, and read and
validte the responses.  When the user has finished answering the
questions, the program should record the responses in a file.

There should be some way to run the program to get it to disgorge a
report about the aggregate survey responses.  The report should
include: The number of people completing the survey; the number
providing each response to each question, and the percentage breakdown
for the responses to each question.

The program could use the terminal as an interface, or it could have a
Tk interface, or could be a CGI program, or whatever you prefer.