Hello,
If i need to give more than one digit input form key pad in arduino how is it possible,through serial monitor i can able to give that.But it is not getting through Keypad.
Any help will be appreciated.
Well, if you explain what components you have, how you have them wired up (with a diagram or well lit, clear and detailed photo), give the code you are trying (this time, following the forum instructions) and explain what you are trying to do, we just might be able to help! 
Show us a good schematic of your circuit.
Show us a good image of your wiring.
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https://forum.arduino.cc/index.php?topic=519037.0
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