#! /usr/bin/perl for(0..39){$i=-1+$_*.05;for(0..59){$r=$j=-2.3+$_*.05; $z=$i;$b=" ";for(0..255){$m=$r*$r;$n=$z*$z;if($m+$n>4) {$b="+";last}$z=2*$r*$z+$i;$r=$m-$n+$j}print$b}print"\n"} #### __END__ Output should be this: ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++ ++ +++++++++++ +++++++++++++++++++++++++++++++++++ +++++++ ++++++++++++++++++++++++++++++++++++ +++++++ +++++++++++++++++++++++++++++++++++ ++++++++ ++++++++++++++++++++++++++++++++++ +++++++ +++++++++++++++++++++++++++++++++ +++++ +++++++++++++++++++++++++++++++++ ++++++ +++++++++++++++++++++++ + +++++ ++++++ +++++++++++++++++++++++ ++ ++++++ ++++++++++++++++++++++ + ++++++ ++++++++++++++++++++++ + ++++++ ++++++++++++++++++++ + + +++++++ ++++++ ++++++++ ++++++++++++++++++++ + + +++++++ ++++++++++++++++++++++ + ++++++ ++++++++++++++++++++++ + ++++++ +++++++++++++++++++++++ ++ ++++++ +++++++++++++++++++++++ + +++++ ++++++ +++++++++++++++++++++++++++++++++ ++++++ +++++++++++++++++++++++++++++++++ +++++ ++++++++++++++++++++++++++++++++++ +++++++ +++++++++++++++++++++++++++++++++++ ++++++++ ++++++++++++++++++++++++++++++++++++ +++++++ +++++++++++++++++++++++++++++++++++ +++++++ ++++++++++++++++++++++++++++++++++++ ++ +++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++