#include <Keypad.h>
#include <LiquidCrystal.h>
const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
                         {'1','2','3','A'},
                         {'4','5','6','B'},
                         {'7','8','9','C'},
                         {'*','0','#','D'}
};
byte rowPins[ROWS] = {6,7,8,9};
byte colPins[COLS] = {10,11,12,13};

Keypad keypad = Keypad(makeKeymap(keys),rowPins,colPins,ROWS,COLS);

void setup() {
  // put your setup code here, to run once:
lcd.begin(16,2);
lcd.clear();
lcd.print("Keypad Input :");
}

void loop() {
  // put your main code here, to run repeatedly:
  char key = keypad.getKey();

  if(key!= NO_KEY){
    lcd.setCursor(0,1);
          lcd.print("   ");
          lcd.print(key);
  }        
  delay(10000);

}