How do you store all return values from a while loop in a vector in matlab ?

I have this for now, but unfortunately it only stores the latest value of choice_breakfast.

while breakfast_choicerep == 'Y' || breakfast_choicerep == 'y'

      choice_breakfast = menu('What do you eat for breakfast?',breakfast_items);
      vector_choice_breakfast = [choice_breakfast]

      breakfast_choicerep = input('Did you eat anything else for brekfast? (Y/N): ', 's');

end

Answer 1

[jgg]

You can just store it as a vector:

 vector_choice_breakfast  = cell(1000,1);
 count = 1;
 while breakfast_choicerep == 'Y' | breakfast_choicerep == 'y'

    choice_breakfast = menu('What do you eat for breakfast?',breakfast_items);
    vector_choice_breakfast(count) = choice_breakfast;
    count = count + 1;
    breakfast_choicerep = input('Did you eat anything else for brekfast? (Y/N): ', 's');
end

The only issue is that you have to make sure you handle what happens when more than 1000 breakfast items are eaten, which could involve throwing an error and handling it (say by resizing the vector) or simply disallowing more output.

[Walter Roberson]

You do not need to handle more than 1000 as an error: you could just let the array grow. Access will get slower and slower and eventually you will start swapping to disk after you get a few 10s of millions of items for the breakfast.

[Harshita Jain]

I get an error saying "Conversion to cell from double is not possible." for the line vector_choice_breakfast(count) = choice_breakfast; I don't understand why it's saying that..

[Harshita Jain]

The vector_choice_breakfast = cell(1000,1); is what's causing the error. so i just left it as an empty array to begin with: vector_choice_breakfast = []; But now, it's not adding the first value i calculate for choice_breakfast before i started the while loop.

[jgg]

Try changing the brackets in the assignment instead:

 vector_choice_breakfast{count} = choice_breakfast;

I thought you were saving character arrays, not floats.