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Answers and rating deltas for

How can I take only integer input from keyboard and if input is invalid how do I ask user again?

Author Votes Δ
Etaoin 3 +3.96
dteoh 0 +0.10
Michael Aaron Safyan 0 -0.04
flopex 0 +0.13
Dave -1 -3.87
Last visited: Sep 14, 2014, 5:07:29 AM