Dear monks,

I'm an entry level Perl user and wish to get some help from you.

I have a small program called "Scheduling.pl" as shown below. When I run the program, I receive an error messgae "Use of uninitialized value in print at Scheduling.pl line 22, <STDIN> line 9."

Does anyone know if this is bug in the program or it is caused by the compiler? By the way, I use ActivePerl 5.6.1.

use warnings;
use strict;

my @horiz = <STDIN>; 

chomp(@horiz);

my @dates = split '\|', shift @horiz; 

splice @dates, 0, 3;

for my $line (@horiz) { 

my @flds = split '\|', $line; 
shift @flds; 
my $PID = shift @flds; 
my $SID = shift @flds;  

my @dates_copy = @dates;
 
for my $date (@dates_copy) { 
print "$PID|$SID|",shift(@flds),"|$date\n"; 
} 

} # for $line
[download]

below are some sample data.

|||12/31/2007|1/1/2008|1/2/2008|1/3/2008|1/4/2008|1/5/2008|
|3104|1|New Years|Holiday|Clinic|||
|3104|2|New Years|Holiday|Clinic|||
|3104|3|New Years|Holiday|Clinic|||
|3104|4|New Years|Holiday|AofC Clin|||
|3109|1|New Years|Holiday|Clinic|||
|3109|2|New Years|Holiday|Clinic|||
|3109|3|New Years|Holiday|Clinic|||
|3109|4|New Years|Holiday|AofC Clin|||||
[download]

Out put

3104|1|New Years|12/31/2007
3104|1|Holiday|1/1/2008
3104|1|Clinic|1/2/2008
3104|1||1/3/2008
3104|1||1/4/2008
3104|1||1/5/2008
3104|2|New Years|12/31/2007
3104|2|Holiday|1/1/2008
3104|2|Clinic|1/2/2008
3104|2||1/3/2008
3104|2||1/4/2008
3104|2||1/5/2008
3104|3|New Years|12/31/2007
3104|3|Holiday|1/1/2008
3104|3|Clinic|1/2/2008
3104|3||1/3/2008
3104|3||1/4/2008
3104|3||1/5/2008
3104|4|New Years|12/31/2007
3104|4|Holiday|1/1/2008
3104|4|AofC Clin|1/2/2008
3104|4||1/3/2008
3104|4||1/4/2008
3104|4||1/5/2008
3109|1|New Years|12/31/2007
3109|1|Holiday|1/1/2008
3109|1|Clinic|1/2/2008
3109|1||1/3/2008
3109|1||1/4/2008
3109|1||1/5/2008
3109|2|New Years|12/31/2007
3109|2|Holiday|1/1/2008
3109|2|Clinic|1/2/2008
3109|2||1/3/2008
3109|2||1/4/2008
3109|2||1/5/2008
3109|3|New Years|12/31/2007
3109|3|Holiday|1/1/2008
3109|3|Clinic|1/2/2008
3109|3||1/3/2008
3109|3||1/4/2008
3109|3||1/5/2008
3109|4|New Years|12/31/2007
3109|4|Holiday|1/1/2008
3109|4|AofC Clin|1/2/2008
3109|4||1/3/2008
3109|4||1/4/2008
3109|4||1/5/2008
[download]

Your help would be greatly appreciated.

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