Keypad interfacing

I am facing problem in interfacing Keypad? please guide me.

fff.ino (513 Bytes)

Please explain exactly what the problem is.

Please post your full sketch. If possible you should always post code directly in the forum thread as text using code tags (</> button on the toolbar). This will make it easy for anyone to look at it, which will increase the likelihood of you getting help. If the sketch is longer than the forum will allow then it’s OK to add it as an attachment. In this case, the sketch is nowhere near the 9000 characters limit so you’re only hurting your chances of getting help by using an attachment.