- Due: Tuesday, May 18th no later than 11:59pm.
- Submission instructions: push a commit with the tag
lab3to your git repository.
- Deadline reminder: after the deadline passes, you cannot earn any points for this assignment. If the deadline is approaching, submit what you have in order to earn partial credit.
- Practice using file redirection.
- Practice using arrays.
This problem comes from problem 1, chapter 7 on page 445-446 of the book.
Write a program to grade an n-question multiple-choice exam, where n is between 1 and 10. You receive the information about the exam from standard input (so you should use
scanf), but you should read it using file redirection instead of typing the input. The first line contains the number of questions followed by the correct answer for each question. All of the following lines contain a student id number followed by that student’s answers to each question. An example input file can be found in
/public/lab3/testdata.txt. It looks like this:
8 ccddabce 100 bcddabca 107 ccddcbab 112 ccddabcc 115 bbccabcd 120 cdcdabde
meaning that there were 8 questions on the exam and five students took it.
Your program should print out a report about the exam that shows the correct answer for each question, the grade for each student (by ID and in the same order that they were passed in), and a count of the number of students who missed each question. For example, your program should output the following given the provided
[p19t655@csci112 lab3]$ ./lab3 < testdata.txt Question 1 2 3 4 5 6 7 8 Answer c c d d a b c e ID Grade(%) 100 75.00 107 62.50 112 87.50 115 37.50 120 62.50 Question 1 2 3 4 5 6 7 8 Missed By 2 2 2 1 1 0 2 4
- Write your program in a file called
- Your output formatting must match the example. Use a tool like diffchecker to compare your output with the sample output. You do not need to worry about trailing spaces.
Grading - 100 points
- 10 points – includes comments to explain what the program does
- 10 points – code is indented so that it is readable
- 15 points – compiles successfully with -Wall – no warnings
- 5 points - Uses
\tfor spacing in output
- 20 points – matches the output format exactly
- 5 points – reads in the input correctly
- 5 points – computes each student’s grade correctly
- 10 points – prints the number of students who missed a question correctly
- 10 points – uses arrays to store the right answers and the missed number of answers
- 10 points – uses at least 2 functions in addition to main
This lab will be graded with scores in Brightspace by 5pm on May 19th.