for loop or while loop?

Hi all, I have a matrix A = [2 3 7 13 24] and I want to form a loop: output = 0 for i=1:somehing! output = output+i also for specific numbers of i(for example for all odd i's) I want to have two outputs, one of them should be zero and the other one is the regular output of the loop for that i. how can I do this and I also want the loop to go through all the elements of A?

Answer 1

[KSSV]

A = [2 3 7 13 24] ;

for i = 1:length(A)
    if mod(i,2)  % odd condition
       [ i  A(i)]
    end
end