#include <Keypad.h>
#include <password.h>
const byte satir = 4;
const byte sutun = 4;
int counter = 0;
Password password = password ("0000");
 cahr tustakimi [satir] [sutun] {
 {'1', '2', '3', 'A'}  
 {'4', '5', '6', 'B'}
 {'7', '8', '9', 'C'}
 {'*', '0', '#', 'D'}
 

 };
byte satirpin[satir] = {9,8,7,6};
byte sutunpin[sutun] = {13,12,11,10}
keypad pad = keypad (makekeypad(tustakimi), satirpin, sutunpin, satir, sutun)
void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
Serial.println("sifre gir lan!");
pad.addEventListener(keypadevent);
}

void loop() {
  // put your main code here, to run repeatedly:
pad.getkey();


}
void keypadevent(keypadevent eKey) {
switch (pad.pedState()){
  case PRESSED:
  if(eKey=='*'){
    Serial.println("konrtol ediliyor");

  }else if(eKey=='#'){
    Serial.print(counter+2);
    Serial.println(". kez sifrenizi giriyorsunuz ");
  }else {
    Serial.print(eKey);
  }switch(eKey) {
    case '*':
    checlpassword
  }
}







}