#! /root/bin/perl
use strict;
use warnings;
use subs;

sub square;
sub read;
sub dist;

my $r; my $r2;
my $i=0;

my $xh; my $yh; my $zh;
my $f1; my $FILE1; my $hline; my @hlines;
$f1=&read;

my $x1; my $y1; my $z1;
my $f2; my $FILE2; my $pline; my @plines;
$f2=&read;

open (FILE1, "$f1") or die "Argh! File not opened! $!";
open (FILE2, "$f2") or die "Argh! Second file not opened! $!";
while (<FILE1>)
        {    $hline=<FILE1>;
                push (@hlines,$hline);
        }
                                                                      
+                                                       
while (<FILE2>)
        {    $pline=<FILE2>;
                push (@plines,$pline);
        }
close FILE2;
close FILE1;
    
print @hlines;
print @plines;
    
&dist;
exit;

sub dist
{
    foreach $hline (@hlines)
    {
        $xh= substr $hline,31,8;
        $yh= substr $hline,40,8;
        $zh= substr $hline,48,8;
        foreach $pline (@plines)
        {
            print '"',$pline,'": len=',length($pline),"\n";
            $x1= substr $pline,31,8;
            $y1= substr $pline,40,8;
            $z1= substr $pline,48,8;
                                    
            $i++;
            $r2=((&square($xh-$x1))+(&square($yh-$y1))+(&square($zh-$z
+1)));
            $r=sqrt($r2);
            print "$i. $r2 and square root is $r\n";
            if(($r<=2.4)&&($r>=3.6))
                { print "match!"}
        }
    }
    print $i;
    return 1;
}

sub square
{
my $num; my $sq;
$num=shift;
$sq = $num * $num;
return $sq;
}

sub read
{
print "Enter file name:";
$a=<STDIN>;
chomp($a);
return $a;
}

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In reply to Re^2: substr in nested foreach loop by sarani
in thread substr in nested foreach loop by sarani

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