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Full Discussion: count average
Top Forums Shell Programming and Scripting count average Post 302199011 by in2nix4life on Sunday 25th of May 2008 04:55:52 PM
Old 05-25-2008
Hope this helps set you in the right direction:

#!/usr/bin/env perl

use strict;

# define the file
my $file = "in-file.txt";

# open the file and dump it's contents into an array
open(FILE, "<$file") or die "Unable to open $file: $!\n";
my @FILE_IN = <FILE>;
close(FILE);

# define a couple of variables we'll need
my $total;
my $average;

# loop through the file and parse out the name, id, and the average
foreach(@FILE_IN) {
chomp;
if ($_ =~ /^([0-9]+).(\w+\s\w+).(.*)/) {
print "Name: $2\n";
print "ID#: $1\n";
my @MARKS = split('\s', $3);
my $num_of_marks = $#MARKS + 1;

foreach(@MARKS) {
$total += $_;
}

my $average = $total / $num_of_marks;
# adjust %.1f to the desired number of decimal places
printf "Avg. mark: %.1f\n\n", $average;

# reset the total and average variables
# otherwise they'll be carried over
# to the next run through the loop
$total = 0;
$average = 0;
} else {
print "There was a problem!\n";
exit(1);
}
}

exit(0);
 

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LEARN ABOUT DEBIAN

devel::loaded

Devel::Loaded(3pm)					User Contributed Perl Documentation					Devel::Loaded(3pm)

NAME

       Loaded - Post-execution dump of loaded modules

SYNOPSIS

	   perl -MDevel::Loaded -Sc programname 2>/dev/null

DESCRIPTION

       The Devel::Loaded module installs an at-exit handler to generate a dump of all the module files used by a Perl program.	If used in
       conjunction with a perl -c, you find those files loaded in at compile time with "use".  If you are willing to wait until after the program
       runs, you can get them all.

EXAMPLES

       This is compile-time only:

	   $ perl -MDevel::Loaded -S -c perldoc 2>/dev/null
	   /usr/local/devperl/lib/5.00554/Exporter.pm
	   /usr/local/devperl/lib/5.00554/strict.pm
	   /usr/local/devperl/lib/5.00554/vars.pm
	   /usr/local/devperl/lib/5.00554/i686-linux/Config.pm
	   /usr/local/devperl/lib/5.00554/Getopt/Std.pm

       This will also catch run-time loads:

	   #!/usr/bin/perl
	   use Devel::Loaded;
	   ...

SEE ALSO

       The plxload and the pmload programs, which use this technique.

AUTHORS and COPYRIGHTS
       Copyright (C) 1999 Tom Christiansen.

       Copyright (C) 2006-2008 Mark Leighton Fisher.

       This is free software; you can redistribute it and/or modify it under the terms of either: (a) the GNU General Public License as published
       by the Free Software Foundation; either version 1, or (at your option) any later version, or (b) the Perl "Artistic License".  (This is the
       Perl 5 licensing scheme.)

       Please note this is a change from the original pmtools-1.00 (still available on CPAN), as pmtools-1.00 were licensed only under the Perl
       "Artistic License".

perl v5.10.1							    2010-02-22							Devel::Loaded(3pm)
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