Comp101语言程序辅导、辅导Python编程设计、Programming程序讲解

日期：2020-11-12 08:36

Comp101 2020-21 Assignment-03: Page 1
COMP101
Introduction to Programming 2020-21
Assignment-03
Issue Date: Monday 9th November 2021
Submission Date: Friday 13th November 2021 (17:00)
1. Overview
a) Summary:
This assignment is worth 13% of the total marks for COMP101.
You must submit an attempt at this assignment else a fail grade for the module
will be awarded. Plagiarism and collusion guidelines apply throughout.
b) Guidance:
Assessment is based on solving the problem specification in terms of design,
clarity, accuracy and appropriate use of code, testing and documentation.
See below for assignment advice:
? No validation is needed – assume user inputs correct data
? No iteration statements are needed
? No modularisation is needed
? No design document is needed for this assignment
c) Submission (two files to be submitted):
a) Submit one .py file with filename in format of:
familyName_givenName-CA03.py e.g. Smith_John-CA03.py
Within the code, the first lines should be comment lines as follows:
#familyName_givenName University id filename Month and Year of coding, filename.py
#Brief description of the problem solved
#Smith_John 20141234 November 2021 CA-03.py
#Description here (keep it clear but brief)
b) Submit one .pdf file containing a test table e.g. Smith_John-CA03.pdf
Use the test table template for your evidence of testing
c) Submit your documents electronically via the department submission server:
https://sam.csc.liv.ac.uk/COMP/Submissions.pl
Earlier submission is possible, but any submission after the deadline attracts the
standard lateness penalties, see:
http://www.csc.liv.ac.uk/department/regulations/practical.html
Comp101 2020-21 Assignment-03: Page 2
COMP101 2020-21 Assignment-03
2. Assessment Information
Assignment Number 03 (of 07)
Weighting 13%
Assignment Circulated See front page
Deadline See front page
Submission Mode e-submission
Learning outcome assessed 1, 2, 4, 7
Purpose of assessment Using sequence and nested selection
constructs to control I/O of strings and
numbers in successful calculations for a
given problem, using import as required.
Marking criteria Total marks over seven questions as a
percentage
Submission necessary in order Yes
to satisfy module requirements? Assignments are not marked
anonymously
Late Submission Penalty Standard UoL Policy.
Comp101 2020-21 Assignment-03: Page 3
3. Problem Specification:
a) Calculate the age of a cat in human years. Only use the equivalence table
below – no alternatives please
Life stage Age of cat Human equivalent
Kitten
birth to 7 months
Overlap is okay
Comp101 2020-21 Assignment-03: Page 4
4. Requirements
a) Present the user with a main menu of three options and a prompt:
Pet Age Menu
------------------
A. Cat Age
B. Dog Age
X. Exit
Please Enter an Option (A, B or X):
NOTES:
? Option-A (only) has to work and only for life stages Prime and
Mature (shaded in the equivalence table)
? Option-B should produce an output message - inform the user it
is under development
? Option-X should produce an output message that the program
will end
? No validation is required – assume ALL input is valid, so it is
okay if the program crashes with ‘wrong’ input
There is a template on Canvas if you
wish to use it
PetAgeTemplate.py
Comp101 2020-21 Assignment-03: Page 5
b) For option-A:
? Prompt the user to enter an integer (no float) of the age for a Prime
or Mature life stage cat only (you do not need to consider other
life stages here).
? Inform the user which life-stage their cat is at and what their age
is in human years.
? The program can exit after this output – there is no requirement
to return to the Main Menu.
c) For option-B:
? Inform the user that this option is under development. No
further processing is required.
? You can assist the user – put an input() statement as the last
statement in this section, informing them to press key
to leave option-B
? The program can exit after this output – there is no requirement
to return to the Main Menu.
d) For option-X:
? Inform the user the program will end – see note above about
input() statement.
? The program should exit after this output.
Comp101 2020-21 Assignment-03: Page 6
Mark scheme
Analysis and Design 20%
Implementation 50%
Testing 15%
Effective algorithm giving efficient selection 15%
The mark scheme looks for:
i) A sequence, selection approach to solving the problem, with effective use of
selection.
An accurate solution that preferably employs efficient use of nested selection
and/or compound Boolean statements.
This will score higher than a solution that over-uses such statements
ii) Variables that make the code clear and readable, thus aiding maintenance and
debugging
iii) Appropriate use of output that benefits the user
iv) In-line comments used effectively
v) Appropriate testing to determine accuracy and/or problems
Do not change the problem specification. Assessment is based only on the data
given in the equivalence table.