A script stores information on potential subjects for an experiment in a vector of structures called subjects. The following shows an example of what the contents might be:

Ch8Ex20.m

% create vector of structures on potential subjects for an

% experiment, calculate ave height and weight, and

% determine and print eligible participants

subjects(3) = struct('name','Mary','sub_id',363,'height',5.1,...

'weight',110);

subjects(1) = struct('name','Joey','sub_id',111,'height',6.7,...

'weight',222.2);

subjects(2) = struct('name','Pat','sub_id',221,'height',5.9,...

'weight',165);

%calculate the average height and weight

avgheight = sum([subjects.height])/length(subjects);

avgweight = sum([subjects.weight])/length(subjects);

%find and print the eligible participants

disp('Eligible Subjects:')

for i = 1:length(subjects)

 if subjects(i).height < avgheight || subjects(i).weight < 

avgweight

 fprintf('%s\n',subjects(i).name)

 end

end