#include <Keypad.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);
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 rowpin[rows] = { 13,12,11,10};
  byte colpin[cols] = {9,8,7,6};

  
  Keypad keypad = Keypad( makeKeymap(keys), rowpin, colpin, rows, cols);

void setup () {

      lcd.begin(16, 2);

      lcd.print("Enter Number:");

      delay(3000);

      lcd.clear();

}


void loop() {

char key = keypad.getKey();

if (key != NO_KEY){

		lcd.print(key);

    }

}