Clear Filters
Clear Filters

Switch-case problem

6 views (last 30 days)
Tiffany McGinnis
Tiffany McGinnis on 12 Feb 2019
Answered: OCDER on 12 Feb 2019
inches = -2;
while ~(inches >=59 && inches <= 78)
inches = input('Enter the height in inches(59-78) : ');
end
pounds = 0;
while ~(pounds >= 90 && pounds <= 350)
pounds = input('Enter the weight in pounds(90-350) : ');
end
gender = 4;
while ~(gender >=1 && gender <=2)
gender = input('Is this person a female(1) or male(2)? Enter 1 or 2:');
end
%*****COMPUTE*****
% Compute conversions
meters = inches * 0.0254;
kilograms = pounds / 2.2046;
% Compute bmi
bmi= kilograms / ((meters)^2);
switch(gender)
case {'1'}
ibw = (45.5 + 2.3 * (inches - 60));
case {'2'}
ibw = (50.0 + 2.3 * (inches - 60));
end
% Convert IBW to pounds
ibw_in_pounds = ibw * 2.2046;
After running error message:
Undefined function or variable 'ibw'.
Error in assign04a (line 50)
ibw_in_pounds = ibw * 2.2046;

Answers (1)

OCDER
OCDER on 12 Feb 2019
ibw wasn't defined if gender is not '1' or '2', which are char. You want gender to be a double of value 1 or 2. Here's a fix.
switch gender
case 1
ibw = (45.5 + 2.3 * (inches - 60));
case 2
ibw = (50.0 + 2.3 * (inches - 60));
otherwise
ibw = %SPECIFY DEFAULT VALUE HERE
error('Incorrect gender option'); %OR, throw an error message
end

Categories

Find more on Develop Apps Using App Designer in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!