I am quite new to Perl and this is my first post here so be gentle. I am using real time in a countdown timer of 60 seconds and need to be able to stop it every 10 seconds and the user must then input whether they would like to continue the countdown or not at each interval of 10. The timer works, I just can't figure out how to pause it for the user to input their response. As basic of an answer as possible would be very welcomed as I do not understand a lot yet. Thank you and here is my code so far. 
my $countdown = 1*60; #60 seconds
$| = 1; #disable output buffering

my $start_time = time;
my $end_time = $start_time + $countdown;


for (;;) {
    my $time = time;
    last if ($time >= $end_time);
    printf("\r%02d:%02d:%02d",
        ($end_time - $time) / (1*60),
        ($end_time - $time) / 60%60,
        ($end_time - $time) % 60,
    );

    sleep(1);
}

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Code tags added by GrandFather

In reply to How do I pause real time in Perl by Anonymous Monk

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