INFORMATION & COMPUTER SCIENCE DEPARTMENT, KFUPM

ICS102 SECTION 02&13  (002 Semester)

Introduction to Computing

Home Work   #04

 

1.       Answer problem R9.5 on page 389 of the ICS102 Reference book.

 

2.       Answer problem R9.6 on page 389 of the ICS102 Reference book.

 

3.       Answer problem R11.15 on page 471 of the ICS102 Reference book.

 

4.       Answer problem P9.3 on page 392 of the ICS102 Reference book

 

5.       Answer problem P11.2 on page 472 of the ICS102 Reference book.

 

6.       Answer problem P11.6 on page 473 of the ICS102 Reference book.

 

7.       A file, answers.txt whose content is shown below, consists of ID numbers and answers of students for a multiple choice quiz (of ten questions):

975678 ADCDABCDAB

976321 ABDCCBDABA

982345 ABDCABDBBA

987987 ABDCCBDABB

996789 BDCCBDABAD

998468 CDBAADBCDC

The key for the quiz is contained in a file, key.txt whose content is shown below:

ABDCCBDABA

Write a program that:

·         reads the student answers in a 2-D array of characters and the key in a 1-D array of characters.

·         computes the score of each student out of 10

·         counts the number of students that correctly answer each question

·         computes the overall average.

·         sends output to a file, Result.txt, whose content should be as follow:.

 

975678  A  D  C  D  A  B  C  D  A  B         2

976321  A  B  D  C  C  B  D  A  B  A        10

982345  A  B  D  C  A  B  D  B  B  A         8

987987  A  B  D  C  C  B  D  A  B  B         9

996789  B  D  C  C  B  D  A  B  A  D         1

998468  C  D  B  A  A  D  B  C  D  C         0

        4  3  3  4  2  4  3  2  3  2         5.0

 

Submission Notes:

1.       Submit both the printed copy and the soft copy in an envelope on or before beginning of class on Saturday, 19/5/2001.  

2.       You must compile each of your classes and save the class files on the floppy. 

3.       All your programs files should be saved in a folder HW3 on your fploppy.

4.       Code your programs according to the Java naming conventions on  this link.

5.       Indent your work so that content of a class and methods are pushed inside by a tab or at least three spaces.

6.       Use comments at the beginning of each program to explain its purpose.  Also include your name and ID number as part of the comment.

7.        Use comments to explain each variable whose purpose cannot be determined from its name.