I am new to MATLAB and am trying to run a simple Fibonacci function but keep getting the error on line 4, "Not enough input arguments." here is what I have

function f = fibonacci(n) % FIBONACCI Fibonacci sequence % f = FIBONACCI(n) generates the first n Fibonacci numbers. f = zeros(n,1); f(1) = 1; f(2) = 2; for k = 3:n f(k) = f(k-1) + f(k-2);

end

fibonacci(12)