MATLAB: I need help with this trivial function.

Question

I'm trying to run this script but I keep getting this error mensage:

          ??? Input argument "x" is undefined.
          Error in ==> fibonacci at 8

Could anybody help me? Here is the code:

function y = fibonacci(x)
if x == 0
    y = 0
elseif x == 1
    y = 1
else
    y = fibonacci(x-1) + fibonacci(x-2)
end

Answer 1

This isn't a script, it's a function. You need to pass input argument while calling the function.

x = 4 ;
y = fibonacci(4) or fibonacci(x);