UMBC CMSC201, Computer Science I, Spring 1994
Sections 0101, 0102 and Honors
Due: April 28, 1994
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The objective of this assignment is to practice making
design decisions using top-down design and to practice manipulating
characters and strings.
Imagine that you work for the editor of a publishing house
where the authors write books that are too long. Your assignment
is to write a program that allows the editor to trim down the books
by removing every other word, every third word, etc. from the text.
Your program should first ask the user for the number of words
to skip before deleting a word. For example, if this number is 2,
then every third word is deleted. So,
This is the time for all good women and men to come to the aid of their country.
This is time for good women men to to the of their .
Your program should preserve all spaces and punctuation. Also, your
program must work over multiple lines, continuing to receive input
until the user enters a line that starts with a period. Here is
a sample run of the program:
Enter number of words to skip: 1
Original Text> Space, the final frontier. These are the
Deleted Text> Space, final . These the
Original Text> voyages of the starship Enterprise.
Deleted Text> of starship .
Original Text> Its continuing mission to explore strange new
Deleted Text> Its mission explore new
Original Text> worlds; to seek out new life, and
Deleted Text> ; to out life,
Original Text> new civilizations; to boldly go where no
Deleted Text> new ; to go no
Original Text> one has gone before.
Deleted Text> has before.
Original Text> .
In addition to correctness, your program will be graded according to
how well you break up this larger problem into smaller pieces. So,
think before you code.
Your program should adhere to the following guidelines.
- Accept string input from the user, line by line,
until the user enters a line starting with a '.' (period).
Subsequent input (if any) may be ignored.
- Handle lines with leading and trailing white space, empty lines and
lines with just white space.
- Allow the user to enter any number of words to skip, from zero
to very large integers.
What to turn in:
Inside the script environment, run your program on the text of
the Star Trek prologue as shown above using 1, 5 and 25 as the number
of words to skip. When you are done, exit from script,
and send in your project and typescript file:
% cat project4.c typescript | mail email@example.com
Remember that your program will be judged on overall style, design and
correctness and not just on the output that it produces on these
particular test cases. (I.e., you probably want to test your program
on examples that you make up yourself.)
Last Modified: June 10, 1994
Richard Chang, firstname.lastname@example.org