Counter not working in for loop

1 次查看（过去 30 天）

Ranjani Shankar 2019-2-13

评论： Star Strider 2019-2-13

I have a counter in a for loop like this:

x = 0;
for i = 1:10
    x = x+1;
    % code that uses the counter
end

However, when I was debugging and removed the semicolon from the x = x+1 statement I get:

x =

0×1 empty double column vector

When I debugged and used disp(i) and disp(x), it would only display the value of i and not x. Does anyone know how to fix this?

Kevin Phung 2019-2-13

it also seems like x is just equivalent to i in every iteration, have you considered just using i?

Ranjani Shankar 2019-2-13

the for loop is actually a nested for loop and x is a counter for every iteration of both for loops

Star Strider 2019-2-13

We cannot see the ‘code that uses the counter’. Check to see if your code is somehow clearing ‘x’ or setting ‘x’ to [].

Ranjani Shankar 2019-2-13

do you have any suggestions for debugging tools other than the ones I've mentioned using?

Star Strider 2019-2-13

Yes. Specifically: Debug a MATLAB Program (link).

在 Help Center 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by