Dear Monks, I am doing some computation on numbers but I get strange results, because the "0" seem to disappear. Have you got some hint ? Thanks a lot ! 


#! perl -slw
use strict;
use diagnostics;
use Data::Dump qw[ pp ];

my $diff = 15;

while (<DATA>){
    my $former_time = substr($_, 0, 4);
    my $former_hour = substr($_, 0, 2);
    my $former_mn = substr($_, 2, 2);
    my $new_hour = $former_hour;
    my $new_mn = $former_mn + $diff ;

    if ($new_mn >= 60){
        $new_mn = $new_mn - 60;
        $new_hour = $new_hour + 1;
    }
    # cas où $diff est suffisamment négatif pour faire basculer dans l
+'heure d'avant
    elsif ($new_mn < 0){
        $new_mn = $new_mn + 60;
        $new_hour = $new_hour - 1;
    }

    my $new_time = "$new_hour"."$new_mn";

    print STDOUT "former_time is $former_time";
    print STDOUT "new time is $new_time";

}


__DATA__
1250
0549
1103
1509
0423
0834

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In reply to problem of configration by steph_bow

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