Help with If statement in the Fibonacci sequence

Want to create a function to display the Fibonacci numbers up to 30, if a number larger than 30 is entered I want the error message 'Number too big' to be displayed. This is what I have so far. Not sure where I am going wrong.

%% Calculate the first 30 numbers of the Fibonacci sequence, >30 display error message

function fib=FunctionFib2(n)

fib = zeros (1,n);

fib(1)=1;

fib(2)=1;

for i=3:n

    fib (i)=fib (i-1) + fib (i-2);

    if (n > 30)

        disp('Number too big')

    end
end

Answer 1

[sixwwwwww]

Dear Sarah, here is correction in your code:

function fib = FunctionFib2(n)
if n > 30
    error('Number is too big')
else
    fib = zeros(1,n);
    fib(1) = 0;
    fib(2) = 1;
    for i = 3:n
        fib(i) = fib(i - 1) + fib(i - 2);
    end
end

[Jan]

There is a typo: Sarah wants to start with [1, 1].

[sixwwwwww]

Maybe but original Fibonacci series start from 0. I was not well aware with that so I consulted the following link: http://en.wikipedia.org/wiki/Fibonacci_number. However in order to have series start from 1 then

fib = zeros(1,n); --> fib = ones(1,n);

and directly start the loop