CS 655 Info. Delivery on the Internet - Homework 2 - Name:_______________
Assigned: Monday, September 29
Due: Friday, October 13 (Submitted by the Handin System)
o Submit your codes electronically by the handin system with the
submission ID hwk2.
(50 points)
1. Write a Perl program to read the starting term, a, the common
ratio, r, and the number of term, n of a geometric series from
the command line and calculate the sum of this series. For example,
your program called "geometry.pl", a possible session would look
like: (10 points)
> geometry.pl 2 3 6
The sum of the geometric series is 728.
Hint: Use @ARGV or shift to retrieve the command-line arguments.
2. Write a Perl program to read a pattern and a file name from
the command line and search a that file for the pattern. If the
pattern is found, print those lines containing the pattern.
A possible session would look like: (10 points)
> grep.pl ate data
John ate an apple.
Mary had a plate of salad.
where 'ate' is the pattern and 'data' is the file name.
3. Write a program that takes a text file as input and displays a
count of lines and words in a file. A possible session would look
like: (15 points)
> wc.pl data
The file contains 9 lines and 39 words.
where 'data' is the file name.
Hint: See word_table.pl on Page 363
4. Write a Perl program with the following specifications. (15 points)
Input: A (data) file that has the following format.
Programming the World Wide Web+Robert W. Sebesta+Addison Wesley+2003
Computer Networks, 4th Ed.+Andrew S. Tanenbaum+Prentice Hall+2002
:
more book entries
:
Output: A HTML document that consists of a table with the title row
Book Title, Authors, Publisher, and Year following by data
rows which indicate the book title, authors, publisher, and
year of each entry.
A running session could be like:
> booklist.pl < data > booklist.html
or
> booklist.pl data booklist.html
The booklist.html would like like:
Book list
Book Title
Authors
Publisher
Year
Programming the World Wide Web
Robert W. Sebesta
Addison Wesley
2003
Computer Networks, 4th Ed.
Andrew S. Tanenbaum
Prentice Hall
2002
where "booklist.pl" is your Perl program, "data" is the input
file, and "booklist.html" is the generated HTML document.
Hint: Use CGI.pm and the table function
(See split.pl, html_table.pl, and conelec1.p).
"print header()" is not required to create a HTML.
You can verify the correctness of your generated HTML file by
any Web browser.
Note: > and < indicates the output and input stream in UNIX
respectively.