MATLAB: How to use “or”

Question

Can u pls tell me what is wrong ( just an example) How do i use the or command ?

   for i = 1:100
    if i == 2|5
    disp('hallo')
    end
    end

Answer 1

for i = 1:100
  if (i == 2)|(i == 5)
    disp('hallo')
  end
end