Here are examples of possible applications:
cooking/kitchen timer
application: counts down to zero from a time given by user and
beeps/buzzes when time has expired
type of loop: "for", given a time, there are a set number of
times the loop which counts down the time will execute
printing a search engine results list
application: list the "hits" found that match key words
type of loop: "for" if the engine looks through entire database or
web and then prints out a list of "hits". This printing is the action
executed each time through the loop; "while" if the engine prints results
as they are found since the engine doesn't know in advance how many listings
should be printed.
A parent packing lunches for his/her family
application: Each lunch gets a sandwich, fruit, and beverage
type of loop: "for" since the parent packs a lunch for each member
of the family. The number of members in the family is known.
The body of the loop contains the actions of packing a sandwich, fruit,
and beverage in each lunch.