const byte ROWS=4;
const byte COLS=4;

char hexakeys[ROWS][COLS]={
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS]={3,2,1,0};
byte colPins[COLS]={13,12,11,10};

Keypad customKeypad=Keypad(makeKeymap(hexaKeys),rowPins,colPins,ROWS,COLS);
LiquidCyrstal lcd(9,8,7,6,5,4);

void setup() {
  lcd.begin(16, 2);
  lcd.print("Key Pressed");
  delay(1500);
  lcd.clear();
  lcd.setCursor(0,0);
}

void loop() {
  
}