MATLAB: Storing values for each iteration of a for loop

Question

Hello,

How do I store values from each iteration of the for loop to make one vector with all the outputs of each iteration?

In my code, I want to store the value of x (size of matrix trial) for each iteration of the for loop. Thanks

a=0;%
b=10;
Trial=[ ];
Iterations=zeros(1,b); 
for k = 1 :b 
    while a ~= 7
       Int = randi([1 12],1,1);
       a=num2str(Int);
       a=str2double(a);
       Trial=[Trial;a];
    end
   [x,y]= size(Trial);
   Iterations(1,k)=x; 
end

Answer 1

I just figured out my problem. I needed to reinitialize the variables of both trial[] and a=0 inside of the for loop.