B142L coursework assignment 2

Academic year 2008/9

Coursework Title:	Text printing and editing utility
Coursework Due Date:	April 26, 2009
Lecturer:	C Nguyen

COURSEWORK DESCRIPTION

Students are required to write a C program that implements the following functions:

Stage 1 – Numeric addressing
When given input data containing multiple lines of text, print one line, a range of lines or an incrementing range of lines.

Stage 2 – Text editing
Commands to delete lines, append new text, replace text and insert new text.

Stage 3 – Wildcard matching
Commands to substitute text strings and use wildcard symbols to match patterns of text.

Stage 4 – Text addressing
Use text strings and wildcard patterns to select lines of text for editing.

Stage 5 – Memory buffer
Commands to hold text in a buffer and grab text from a buffer while editing text input.

Computing practicals are provided for each stage with examples of the required functionalities. The completed coursework program must be able to work with all the examples provided in the computing practicals.

This coursework contributes 35% to the B142L unit mark. It is based on the classic Unix sed utility for stream based text editing.

COURSEWORK SUBMISSION

Students are required to submit their source code and design notes online using the Mosaic website. Do not upload document files such as Microsoft Word, Adobe Acrobat or OpenOffice Writer. Source code and design notes must be written in the student's Mosaic coursework page.

ASSESSMENT CRITERIA

(1) Functionality and source code (50 marks)

Marks	Criteria
40–50	Program implements all required features of Stage 4 and some required features of Stage 5.
35–39	Program implements all required features of 4.
30–34	Program implements all required features of Stage 3 and some required features of Stage 4.
25–29	Program implements some required features of Stage 3.
20–24	At a threshold level, program implements all required features of Stages 1 and 2.
0–19	Program does not implement the required features of Stages 1 and 2.

(2) Design notes (40 marks)

Marks	Criteria
32–40	The design notes discuss plans for program improvements and new features.
28–31	The design notes explain important algorithms and optimization methods in the program.
24–27	The design notes explain the program structure, organization and functions.
20–23	The design notes explain the purpose and use of iterative loops in the program.
16–19	At a threshold level, the design notes explain the purpose and use of constants, variables and selection logic in the program.
0–15	The design notes do not adequately explain the purpose and use of constants, variables and selection logic in the program.

(3) Peer review (10 marks)

Marks	Criteria
10	At least one of the votes is for a coursework submission which received the top 5 highest marks.
5	At a threshold level, votes for 3 coursework submissions which best fit the coursework assessment criteria.

Stage 1 –	Numeric addressing When given input data containing multiple lines of text, print one line, a range of lines or an incrementing range of lines.
Stage 2 –	Text editing Commands to delete lines, append new text, replace text and insert new text.
Stage 3 –	Wildcard matching Commands to substitute text strings and use wildcard symbols to match patterns of text.
Stage 4 –	Text addressing Use text strings and wildcard patterns to select lines of text for editing.
Stage 5 –	Memory buffer Commands to hold text in a buffer and grab text from a buffer while editing text input.