function [BMI,category,target_weight]=mybmi(W,h)
BMI=round(W/h^2*703);
if (BMI<19)
    category='underweight';
    target_weight=round(19*h^2/703);
end
if (BMI>=19) & (BMI<=25)
    category='healthy';
    target_weight=round(W);
end
if (BMI>25)
    category='overweight';
    target_weight=round(25*h^2/703);
end