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

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