Extract row each iteration

I would like to extract a 1-row vector "K" that changes each iteration and create a matrix "C" with rows equal to the vector. I have a while loop that determines the values of "K" and just want to rerun the program 1000 times and save all "K" in the Matrix "C" as rows. This is what I am doing but looks like something is not as it is supposed be:

for ii=1:1000
        while ....
        K=...
        end
    C(ii,:)=K
end

[Stephen23]

"...but looks like something is not as it is supposed be"

Do you have any problem with the loops? Are the output data what you would expect to get?

[Miroslav Mitev]

It does not give me output for "C" at all. It says there is no such variable as "ii". I have just defined "ii" and created a while loop where "ii=ii+1" in every loop and it works fine now. But is it possible to be done with for loop?

[Stephen23]

@Miroslav Mitev: please make a new comment and upload your code by clicking the paperclip button.

[Raphael Klapczynski]

It looks like a problem caused by K vector. The for loop works without any problems for me. Or you manipulate ii inside the while-loop.

for ii=1:4
    K = rand([1 3]);
    C(ii,:)=K
end

[Miroslav Mitev]

Thank you for your comments. I did solve the issue.