Finding the nth term of the fibonacci sequence in matlab.

I am attempting to write a program that takes a user's input (n) and outputs the nth term of the Fibonacci sequence, without using any of MATLAB's inbuilt functions. I have currently written the following function, however I wish to alter this code slightly so that n=input("Enter value of n") however I am unsure how to go about this? Do I need to declare an empty array called fib1?

function f = fib1(n)
if n <= 1
f = 1;
else
f = fib1(n-1) + fib1(n-2);
end

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/38787-what-can-be-programmed-without-any-built-in-functions

Answer 1

[Star Strider]

You have the correct approach.

Try this:

n = input("Enter value of n ");
f = fib1(n)

When this is then run, the result is:

Enter value of n 10

f =

      89

[Sara Jones]

I tried the suggestion you provided and I obtain the following error: Undefined function or variable 'fib1'. The code is as follows:

n=input("Enter value of n");
f = fib1(n);
if n <= 1
f = 1;
else
f = fib1(n-1) + fib1(n-2);
end

[Star Strider]

You must save your function in a separate file called ‘fib1.m’.

Then my Answer will work.