When I run this code my fibonacci sequence is missing a beginning 1. Can someone please tell why it is doing this and how I can fix it?

The output I get when inserting 1 for the fist number, 1 for the second number, and 10 for the total number of elements is the following: 1 2 3 5 8 13 21 34 55 89.  There should be another 1 at the beginning of this output.

Answer 1

[Rajiv Ghosh-Roy]

You initialize a(1) to 1 and a(2) to 1, but then on line 7 you run

a = 1:z;

This changes a(1) to 1 and a(2) to 2. You can remove the line 7 (which makes a grow on each loop iteration), or you can put a=1:z before line 5. Even better, initialize it to a = zeros(1, z), again before line 5.