Generating Fibonacci Sequence Using While Loop

Hello all,

I am trying to generate the first Fibonacci Sequence Term greater than 1000 using a while loop. I am using the following code:

fibf(1) = 1;
fibf(2) = 1;
n=3:50;
while fibf(n) < 1000
  fibf(n) = fibf(n-1)+fibf(n-2);
end

I am getting the error, 'Index exceeds matrix dimensions'. Any help is appreciated

[Rajapriyadharshini M.S.]

not understandable

Answer 1

[Azzi Abdelmalek]

fibf(1) = 1;
fibf(2) = 1;
n=3 
while fibf(n-1) < 1000
  fibf(n) = fibf(n-1)+fibf(n-2);
  n=n+1;
end

[Umesh Pandey]

fibf(1)=0 ? also it gives one value more than 1000.

[Arvindhan Sayapathy]

To get values exactly less than 1000, you can change the while condition to:

while(fibf(n - 1) + fibf(n - 2) < 1000)

[Austin Marking]

Does the counter variable “n” HAVE to go second in the while loop?

Answer 2

[NEHA THAKUR]

fibf(1) = 1;

fibf(2) = 1;

n=3

while fibf(n-1) < 1000

fibf(n) = fibf(n-1)+fibf(n-2);

n=n+1;

end