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bmi demonstration with loops
Conditionals and Loops example from a Well House Consultants training course
More on Conditionals and Loops [link]
Source code: bmi4 Module: P204
=head1 This follows on from the bmi3 and bmi2 demonstrations showing the code with a loop added. So you can put in your height and weight and see how your health factor changes as you loose or gain weight =cut # Read the user input # ------------------- print "How heavy are you in kgs: " ; chop ($weight = <STDIN>); print "How tall are you in metres: "; chop ($height = <STDIN>); $start_w = $weight - 10; $end_w = $weight + 10; $current_w = $start_w; # Early course example - see also "for loop" ;-) while ($current_w <= $end_w) { $bmi = $current_w / ($height * $height) ; print "$current_w kgs - bmi: $bmi "; if ($bmi < 20) { print "Skinny\n"; } else { if ($bmi < 25) { print "On target\n"; } else { print "Well Built\n"; } } $current_w += 2; } __END__ Sample output: Dorothy-2:j10p grahamellis$ perl bmi4 How heavy are you in kgs: 70 How tall are you in metres: 1.76 60 kgs - bmi: 19.3698347107438 Skinny 62 kgs - bmi: 20.0154958677686 On target 64 kgs - bmi: 20.6611570247934 On target 66 kgs - bmi: 21.3068181818182 On target 68 kgs - bmi: 21.952479338843 On target 70 kgs - bmi: 22.5981404958678 On target 72 kgs - bmi: 23.2438016528926 On target 74 kgs - bmi: 23.8894628099174 On target 76 kgs - bmi: 24.5351239669421 On target 78 kgs - bmi: 25.1807851239669 Well Built 80 kgs - bmi: 25.8264462809917 Well Built Dorothy-2:j10p grahamellis$ Learn about this subject
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