Why is matlab busy?

I'm trying a basic script and working some things out for a base on a much more compliacted script, but for some reason MATLAB can't run the whole script and stays busy and never finishes? The script says there's nothing wrong with it so I just don't understand why it is forever busy.

Script:

r = ones(1,10);

i = 1;

while i <= length(r)

r(i) = 0;

i = 1+1;

end

it does the first two elements then stops.

Answer 1

[Steven Lord]

    i = 1+1;

Did you mean to add 1 to i rather than adding 1 to 1? The length of r is greater than 2, so the condition of your while statement is always satisfied. You have an infinite loop.

[Robert Haxhari]

Oh my god I'm an idiot, thank you so much this was driving me crazy!!

[Steven Lord]

As a general suggestion, when you encounter a situation like this in the future I recommend using the debugging tools built into MATLAB to step through the code (section by section or line by line) to determine specifically where the problem is introduced.