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Answer: How do I round up a number?

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  1. or download this
    use POSIX qw(ceil);
    print ceil(3.5);   # prints 4
    print ceil(4);     # also prints 4
    
  2. or download this
    sub roundup {
        my $n = shift;
        return(($n == int($n)) ? $n : int($n + 1))
    }
    

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