Body_Mass_Index.m

%BMI = mass / height^2  =  (kg/m^2) in SI units
disp('Hello, this is the BMI calculator.')
disp(' ')
Weight = input('Enter your weight (lbs), or type 0 for SI units: ');

if Weight == 0;
    Weight = input('Enter your mass (kg): ')
    Height = input('Enter your height (m): ')
    BMI = (Weight / (Height^2)) %kg/m^2
else
    Height = input('Enter your height (ft): ')
    %Conversion to SI units
    BMI = (Weight / (Height^2)) * 4.882427111 %kg/m^2
end
if (BMI < 16.5);
    disp('You are severly underweight')
else if ((BMI > 16.5) && (BMI <= 18.5));
        disp('You are underweight')
    else if ((BMI > 18.5) && (BMI <= 25));
            disp('You are normal')
        else if ((BMI > 25) && (BMI <= 30));
                disp('You are overweight')
            else if ((BMI > 30) && (BMI <= 35));
                    disp('You are classified as obese Class I')
                else if ((BMI > 35) && (BMI <= 40));
                        disp('You are classified as obese Class II')
                    else if (BMI > 40);
                            disp('You are classified as obese Class III')
                        end
                    end
                end
            end
        end
    end
end
disp(' ')
disp('Posssible BMI ranges: < 16.5 severe underweight, 16.5-18.5 underweight, 18.5-25 normal, 25-30 overweight, > 30 obese')
% The possible BMI categories are as follows: a BMI of less than 16.5
% indicates severe underweight, 16.5 to 18.5 is underweight, 18.5 to 25
% is normal, 25 to 30 is overweight. The Obese category range from 30-35
% (class I), 35-40 (class II), and over 40 is class III.