Apart from reworking your code a little to avoid external file usage, the following should point you in the right direction:

use strict;
use warnings;


my $converted;
my $discarded;
my $holder;
my @report;

$converted=0;
$discarded=0;

sub report {
    my ($original, $result) = @_;
    
    $original =~ tr/\n//d;
    
    if (defined $result) {
        $result =~ tr/\n//d;
        push @report, "$original -> $result\n";
        $converted++;
    } else {
        push @report, "$original\n";
    }
}


while (<DATA>) {
    my $line = $_;

    if ($line =~ /\bMOVE\s(\d+)\sTO\s(\w+)/) {
        $line = "$2 := $1;\n";
        report ($_, $line);
    } elsif ($line =~ /\bDISPLAY\s'([^']*)'\./) {
        $line = "PUT(\"$1\");\n";
        report ($_, $line);
    } elsif ($line =~ /\bDISPLAY\s(\w+)\./) {
        $line = "PUT($1);\n";
        report ($_, $line);
    } else {
        $discarded++;
    }
    
    print $line;
}

report ("No. of Keywords Converted: $converted\n");
report ("No. of Keywords Discarded: $discarded, \n");

print "------------------8<----------------------\n";
print @report;

__DATA__
MOVE 4 TO INT1.
DISPLAY 'MEMBERS OF THE GROUP'.
DISPLAY INT1.
ADD 5 TO INT4

[download]

Prints:

INT1 := 4;
PUT("MEMBERS OF THE GROUP");
PUT(INT1);
ADD 5 TO INT4
------------------8<----------------------
MOVE 4 TO INT1. -> INT1 := 4;
DISPLAY 'MEMBERS OF THE GROUP'. -> PUT("MEMBERS OF THE GROUP");
DISPLAY INT1. -> PUT(INT1);
No. of Keywords Converted: 3
No. of Keywords Discarded: 1,

[download]
DWIM is Perl's answer to Gödel

In reply to Re: switching parts of a text by GrandFather
in thread switching parts of a text by oblate kramrdc

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