Anne Dawson: CSCI101A_HW1_SP05.htm 

 

First created: Friday 14th January 2005, 7:40 PT, AHD

Last updated:  Monday 24th January 2005, 6:57 PT, AHD

 

This document is subject to change without notice.

 

Please report any errors or omissions in this document to

adawson@coquitlamcollege.com

 

For due date, see course schedule.

 

 

Special instructions:  Each student must complete this homework.

 

CSCI101A Homework 1

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Specification:

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Write a program (HW1.cpp) that will help an elementary school student learn multiplication.  Your program will generate two random numbers in the range 1 to 9.  It should then display a question such as:

 

How much is 6 times 7?

 

The student then types the answer.  Your program checks the student's answer. If it is correct, the text "Very good!" is displayed followed by the next multiplication question. If the answer is wrong, display the text "Incorrect answer. The correct answer is X." where X is the correct answer, before moving on to the next question. The program displays ten questions, and then displays the resulting score out of ten as a percentage.  If the percentage is 70% or more, display the text "Well done! Keep up the good work!" otherwise the text "Please see your instructor for extra help" should be displayed.

 

Your main program should call the functions getNumber and doTheMath. The headers of these functions are as follows:

 

int getNumber( void )

 

bool doTheMath( int num1, int num2)

 

getNumber returns a random integer number in the range 1 to 9. You should study the program:

http://www.coquitlamcollege.com/adawson/random.cpp for an example of random number generation in C++ using the Borland environment.  If you're using the Dev-C++ environment, study this program:

http://www.coquitlamcollege.com/adawson/random_devcpp.cpp

 

 

doTheMath receives two random numbers, displays the multiplication question using these two numbers, and returns a Boolean value; doTheMath returns the value true if the student correctly answers the question, otherwise it returns the Boolean value false.

 

The main function calls the getNumber and doTheMath functions, and calculates and displays the result.

 

Marking Scheme :

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The following marking scheme applies:

 

 

Course Code:      CSCI101A

Semester:         SP05

Assignment Code:  HW1

Instructor Name:  Dr Anne Dawson

 

 

Student Name:

Student Number:

 

 

DESIGN

 

1.  The program has appropriate modularity

    i.e. functions are used where it makes sense to use them.   /10

                       

2.  Appropriate data types are used.                            /10

 

3.  Appropriate control structures are used

    (i.e. loops and decisions).                                 /10

 

4.  The User Interface (output to the screen) is

    clear and tidy.                                             /10

 

MAINTAINABILITY

 

5.  The program is commented appropriately - including

    date, filename and pre- and post-condition

    comments.                                                   /10

 

6.  The program has meaningful identifiers.                     /10

 

7.  The program is indented (spaced out) correctly, to

    aid the understanding of the code.                          /10

 

8.  The code is easy to follow.                                 /10

 

CORRECTNESS:

 

9.  The program compiles with 0 errors and 0 warnings.          /10

 

10. Appropriate test data and results are shown in

    the comments at the top of the code. 

    An appropriate number and variety of test data

    sets is supplied.                                           /10

 

 

                                               % Complete:

                                                    Total:     /100

                                                     Date: