MATLAB: How to create a question that loops until it receives correct answer

loop

How do I create a program that repeatedly asks the question until the user gives the correct answer? Below is a simple code to explain what exactly I'm asking…
    prompt = 'What age is Seán? ';
    age = (input(prompt));
      ageans = 21;
      if age == ageans
          disp('Correct!');
      else
          disp('Wrong');
      end
So if someone were to answer 37, rather than 21, how would I change the code so that it would loop back to the original question to ask the user again?

Best Answer

age = 0;
ageans = 21;
while age ~= ageans
     prompta = 'What age is Seán? ';
     age = (input(prompta));
     if age == ageans
        disp('Correct!');
     else
        disp('Wrong');
     end 
end
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