I am adding two random integers r_1 and r_2. If r_1=0 then n_1=-20. If r_2=0 then n_2=20.
This means that my correct answer could be r_1 + r_2 or n_1 + r_2 or r_1 + n_2 or n_1 + n_2.
How do I code that the correct answer could be any of these four situations.
Am I interpreting this correctly that you would like to avoid either r_1 or r_2 being zero? If so, using
will generate non-zero values for r_1 and r_2 and allow you to have r_1 + r_2` as your only solution, which you already have coded in your input.
Hope this helps!