An Ad consists of whether or not the type of the ad is political (as opposed to a product ad),
the name of the product or politician the ad is for,
the duration of the ad (in seconds), the cost to produce the ad (in thousands of dollars), whether or not the
ad is to be aired nationally (as opposed to locally), the time of day that the ad is
to be aired (either daytime, primetime, or off-hour), and the number of times
the ad is to be aired.
Write data definitions and provide examples of data for
Ad and ListOfAd. The name of your struct should be ad. Make sure you define the fields in your struct in the order given above. You should use the data type Boolean to represent the fields for political/product and national/local.
Ask a lab assistant to check over your data definitions and examples.
Write the templates for Ad and ListOfAd.
Ask a lab assistant to check over your templates.
Make sure you name your functions exactly the same as the names given in the problems below. Otherwise, our auto-tester won't work, and ...well, you know the rest.
Write a function count-political-ads that consumes a
list of ads and produces the number of ads in the list that are classified
as political ads.
Write a function any-ads-for? that consumes a list of
ads and a String representing a product name or politician's name, and produces
a Boolean. The function returns true if the list contains any ads for the
given product or politician.
Write a function primetime-ads that consumes a list of ads
and produces a list of all the ads airing in primetime.
Write a function politicians-sponsoring-ads that consumes a list of ads
and produces a list of strings. The list that is produced contains the names
of the politicians who have political ads (it's OK if the resulting list contains duplicate names).
Write a function air-cost that consumes an Ad and produces
a Number. The number produced is the cost of airing the ad, which is determined
as follows: airtime is sold in 30-second-spot blocks (so if the duration
of the ad is 15 seconds, it would cost half the stated amount, etc.). The cost of a
30-second primetime ad for a national market is $100,000. The cost of a
30-second primetime ad for a local market is $5000. A discount of 20% is
applied to the cost if the ad is aired in the daytime, and a discount of
50% is applied if the ad is aired during off-hours; the discounts apply
to both national and local ads. Finally, the air-cost is multiplied by the
number of times the ad is to be aired. (You may assume that all airings of an
ad occur in the same market and at the same time of day.)
Write a function campaign-air-cost that consumes a list of
ads and the name of a politician, and produces the total air-cost of all political ads for that politician.
Write a function total-ad-cost that consumes an Ad and
produces the total cost of the ad. The total cost
is the sum of the cost of producing the ad and the cost of airing
the ad.
Write a function expensive-ads that consumes a list
of ads and a Number. The function produces a list of those ads for which
the total ad cost exceeds the given number.
Submit your .rkt file to InstructAssist. Name your file according to the naming conventions for files.
Make sure both partners' names and login names appear at the top of the file in a comment.