Ask Experts Questions for FREE Help !
    dragonfly11's Avatar
    dragonfly11 Posts: 12, Reputation: 1
    New Member

    Jul 25, 2005, 05:19 PM
    Need help with Perl!
    I am currently learning how to use Perl from a book. One of the exercises on chapter 4 (Scalars, Arrays and Hashes) has really left me dumb. This is the problem, but I can't figure out the coding to make the "Course code" typed in the user to appear in the place of "Shell Programming" where it should be.



    Write a script called elective that will contain a hash.
    a. The keys will be code numbers --2CPR2B, 1UNX1B, 3SH414, 4PL400.
    b. The values will be course names, C Language, Intro to UNIX, Shell Programming, Perl Programming.
    c. PRint the entire array.
    d. Ask the user to type the code number for the course he plans to take this semester and print a line resembling the following:

    You will be taking Shell Programming this semester.

    Here is the coding I have so far:

    #! Usr/bin/perl

    %courses = (
    '2CPR2B' => 'C Programming',
    '1UNX1B' => 'Intro to UNIX',
    '4PL400' => 'Perl Programming',
    '3SH414' => 'Shell Programming',
    print %courses, "\n";
    print "Please type in the code number of the course you will be taking this semester:", "\n";
    print "You will be taking $courses{$course} this semester.\n";
    LTheobald's Avatar
    LTheobald Posts: 1,051, Reputation: 127
    Ultra Member

    Jul 26, 2005, 03:34 AM
    Try adding the following after the line "$course=<STDIN>;"
    This will remove any new lines characters from the end of the $course variable which is what could be causing the mismatch. Let me know if this works. I've never tried Perl before but I'll try and help some more.
    dragonfly11's Avatar
    dragonfly11 Posts: 12, Reputation: 1
    New Member

    Jul 26, 2005, 06:56 AM
    YES!! Thank you so much my friend! It worked like a charm!

    Now I can keep going further in my exercises...

    Thanks again! :)
    iFire's Avatar
    iFire Posts: 39, Reputation: -1
    Junior Member

    Nov 17, 2008, 12:14 PM

    Truth be told, when you want to remove the newline character which is always implemented to the end of STDIN, you should use chomp, which only removes the newline char. Chop removes the last char, whatever it maybe.

    And you should do it like:
    chomp($var = <STDIN>); #It saves a line. :D

Not your question? Ask your question View similar questions


Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.

Check out some similar questions!

PHP File upload and Perl [ 4 Answers ]

Hi All, I am using a perl script to access the webpages designed in PHP. I donot know how to automate the file upload part of the site. Can anyone help me. FYI:I am using WWW::Mechanize module of perl Thanks, Novice_perl

View more questions Search