While Loop Inside a function

How do I write a while loop inside a function?

I want a function that will continue to run until a user inputs a number between the given choices.

Answer 1

[Star Strider]

Write it the same way you would write a while loop in a script.

Also consider putting in a counter with a limited number of iterations, or some other condition (such as testing for an empty response), so that it does not become an infinite loop.

Answer 2

[Walter Roberson]

function user_choice = ask_connectivity
    user_choice = [];
    while ~isscalar(user_choice) || ~ismember(user_choice, [4, 8, 26])
        user_choice = input('Enter connectivity to use, 4, 8, or 26? ');
    end
end