Help me do a big while function

Prompt the user to enter a value for height in inches (59-78). Enter zero to end.

While height not equal to zero process BMI information

Prompt the user to enter a value for weight in pounds (90-350).

For example, when run the program, it asks me to input the height in the range above. If I enter 0, the program stop. If not zero, it will start compute the bmi with the condition I created in a first part. My instructor said I have to do a big WhiLE, BUT i DON'T KNOW HOW TO DO IT. pLEASE HELP ME. tHANKS.

[Sean de Wolski]

As opposed to a little while?

I typically tell me wife I'll be home in a little while; I suppose she probably interprets this as a big while.

[Walter Roberson]

Sounds like you didn't license the GOTO Toolbox.

Answer 1

[THANH NGUYEN]

I add a while above of the first line of my code, but it doesn't work as I want. The below is the code for first part. The first 2 while I use or. The last while I use and. Now I have to adjust a little bit but still don't know how to do

% Prompt the user to enter a value for weight in pounds and height in inches

inches = input('Enter the height in inches (59-78): ');

while (inches <59 || inches>78)

inches=input('Enter the height in inches (59-78): ');

end

pounds = input('Enter the weight in pounds (90-350): ');

while (pounds <90 || pounds > 350)

pounds=input('Enter the weight in pounds (90-350): ');

end

% === BMI ======

% compute converstions

meters = inches * 0.0254;

kilograms = pounds / 2.2046;

% calculate BMI

bmi = kilograms / meters ^ 2;

% display BMI

fprintf('The BMI is: %.2f\n', bmi);

disp('  ')

% display BMI classification

fprintf('BMI Classification: ');

if ( bmi < 18.5)

fprintf('Underweight\n')

elseif (bmi >= 18.5 && bmi < 25)

fprintf('Normal\n')

elseif (bmi >= 25 && bmi < 30)

fprintf('Overweight\n')

else

fprintf('Obese\n')

end

% === TARGET BMI AND WEIGHT ======
% Prompt the user to enter a value for BMI

target_BMI = input('Enter the target BMI (19-25): ');

while (target_BMI <19 || target_BMI >25);

target_BMI= input('Enter the target BMI (19-25): ');

end

% compute weight

kilograms = target_BMI * meters^2;
% Compute conversions

pounds = 2.2046 * kilograms;
% display weight

fprintf('The target weight is: %.1f pounds\n\n', pounds)

% === IBW ======
%Prompt user to enter the gender (F or M)

gender = input('Is the person a female or male? Enter F or M: ','s');

while (gender ~= 'F' && gender ~= 'f' && gender ~= 'M' && gender ~= 'm')

gender = input('Is the person a female or male? Enter F or M: ','s');

end

% compute the IBW for the given height and gender

switch (gender)

case {'F','f'}

ideal = 45.5 + 2.3 * (inches-60);

case {'M','m'}

ideal = 50.0 + 2.3 * (inches-60);

end

% Convert IBW to pounds

pounds = 2.2046 * ideal;

% display IBW

fprintf('The IBW is: %.1f pounds\n\n', pounds);

    end

Answer 2

[Walter Roberson]

http://www.mathworks.co.uk/matlabcentral/answers/64957-i-wrote-respected-coding-for-my-algorithm-is-it-correct#comment_132867