use strict;

sub emphasize() {
    # Takes a string and prints it to screen surrounded by astericks for emphasis
    my $screen_width = 80;
    my $printable_space = ($screen_width - 2);

    my $string = shift;
    my $string_length = length($string);
    if ( ($string_length % 2) != 0 ) {
        $string .= " ";
    }
    print "*" x $screen_width;
    print "*";
    print " " x $printable_space;
    print "*";

    print "*";
    print " " x (($printable_space - $string_length) / 2);
    print "$string";
    print " " x (($printable_space - $string_length) / 2);
    print "*";

    print "*";
    print " " x $printable_space;
    print "*";
    print "*" x $screen_width;
}