CS201
Lab 8 - Grade Multiple Choice Exam
Objectives:
- Grade an n-question multiple-choice exam (for n between 1 and
50). Provide feedback about the most
frequently missed questions.
Readings:
- Read Chapter 8 in the Hanly/Koffman text.
Deliverables: (DUE 48 HOURS AFTER THE END OF YOUR LAB)
I just talked with Todd, your
generous GTA! He recommended extending the deadline till midnight tonight...
I thought however, some of you may want to travel home for spring break or
something, so here is a deal I am putting on the table:
If you manage(d) to get the deadlines which I specified initially (that is 48
hrs after your lab time) you get 25% bonus to your score. Otherwise, the
deadline for Lab 8 is Wednesday, March 15 at midnight, sharp.
Just a little "Happy Spring Break" gift! :)
- Submittal of the following files:
- Makefile
- Proto.h
- Lab8.c
- GetAnswers.c
TO DO (for this lab)
- Design and Write a program to solve Programming Project #1
on page 422-423 of the Hanly/Koffman text.
- The book mentions "an open input file" and an additional case when you
may need to call function fgetAnswers. I want
you to use
redirection to read from a data file and to write to a data file.
This means you use regular scanf and printf
functions. There is no need to worry about any other data/input the
textbook's authors want you to read from. fgetAnswers needs
to read only from a keyboard or a re-directed file.
- To read and write from/to files, you run your program by doing:
$ Lab8 < examdat.txt > report.txt
- Sample input file (e.g.
examdat.txt):
5 dbbac
111 dabac
102 dcbdc
251 dbbac
The first line of input file includes: (1) the number of questions that were
given during a test, (2) single space, and (3) the correct answers listed one
after another (no space there!). Assume, there cannot be more than 50 questions,
and that the number of students is unknown (i.e. you cannot declare a constant
here!). Assume every student ID is a unique, 3-digit integer. The rest you can learn from the textbook... :)
Sample output file (e.g. report.txt):
Exam Report
Question 1 2 3 4 5
Answer d b b a c
ID Score(%)
111 80
102 60
251 100
Question 1 2 3 4 5
Missed by 0 2 0 1 0
Helpful Hints
The following links show the format of the input and output files
expected. You can use them for testing if necessary. Good luck! :)