A "quick and dirty" way to do this task is to use the perl Command Switches "-F" to do the input, main loop, and splitting. Use an END block to print the summary. Note that the variable @sums must be a declared as a package variable in order to access it in the END block. (Anyone know a better way?) 
#!perl -F','
use strict;
use warnings;
use feature 'state';
state $header = 1;
our @sums;
if ($header) {
    printf "%-24s" . " %4s"x10,
        'Number', @F[1..10];
    $header = 0;
    next;
}

chomp $F[10];
for (reverse 2..10) {
    $F[$_] = ( ( $F[$_-1] xor $F[$_] ) ? .5 : 0 );
    $sums[$_] += $F[$_];
}
$F[1] = 0;
$sums[1] += $F[1];

printf "%-24s " . " %3.1f "x10 . "\n", @F;

END{
    our @sums;
    printf '*'x75 . "\n";
    printf "%-24s" . " %3.1f "x10 . "\n",
        "Sum of weights", @sums[1..10];
    printf '*'x75 . "\n";
}

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Bill

In reply to Re: Perl script for the post processing of one CSV file by BillKSmith
in thread Perl script for the post processing of one CSV file by kshitij

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