How to answer this question

[yaaqub]

Hi; for every new input ,the old input stays on screan.... It should be non-negative number and keep doing that til a non-negative number is entered. distance increase at 0: 0 distance increase at 1: 2 distance increase at 2: 3 distance increase at 3: 2 distance increase at 4: 4 distance increase at 5: -2 distance increase at 5: (non-negative input):1 john,k -- modified at 9:00 Saturday 11th March, 2006