You need to use an array to store all the values. If values are scalar or vectors of constant length, then you can use simple arrays. If, in each iteration, the result is of variable length, then you will need to use cell arrays. For example
A = zeros(1, 10)
for i = 2:10
A(i) = A(i-1) + 1;
end
See the first example here: https://www.mathworks.com/help/matlab/ref/for.html
