#include <LiquidCrystal.h>
#include <Keypad.h>

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
const int rs = 23, en = 25, d4 = 27, d5 = 29, d6 = 31, d7 = 33;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

byte rowPins[ROWS] = {35, 37, 39, 41}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {43, 45, 47, 49}; //connect to the column pinouts of the keypad

//Create an object of keypad
Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
long Num1,Num2,Number;
char key,action;
boolean result = false;

void setup() {
  // put your setup code here, to run once:
	// set up the LCD's number of columns and rows:
	lcd.begin(16, 2);
	// Clears the LCD screen
	lcd.clear();
  Serial.begin(9600);
}

void loop() {

key = kpd.getKey(); //storing pressed key value in a char

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