const int dataPin = 11;
const int clockPin = 9;
const int latchPin = 12;
const int new [3,4,6]
const int buttonUp = 2;    
const int buttonDown = 3;  
const int buzzer = 4;      // базер на 3 кн а кн на 4)))

int counter = 0;
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;
int lastButtonUpState = HIGH;
// int lastButtonUpState
int lastButtonDownState = HIGH;
int lastButtonDownstate = LOW;
int lastButtonDownstate = HEX;
// const
byte digits[10] = {
  B00111111, 
  B00000110, 
  B01011011, 
  B01001111, 
  B01100110, 
  B01101101, 
  B01111101, 
  B00000111, 
  B01111111, 
  B01101111  
};

void beep() {
  tone(buzzer, 1000, 100);
}
// Static.out.println (11,12,13);
// Scanner sc = new Scanner(System.in);
// tone( buzzer,100)

void displayNumber(int number) {
  if (number < 0) number = 0;
  //if (number > 20 ) number = 30;
  //if (number < 20) number = 9;
  if (number > 9) number = 9;
  
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, digits[number]);
  digitalWrite(latchPin, HIGH);
}

// void checkButtons() { 
 //  int currentButtonUpState = digitalRead(buttonUp);
  int currentButtonDownState = digitalRead(buttonDown);
  
  if (currentButtonUpState == LOW && lastButtonUpState == HIGH) {
    if (millis() - lastDebounceTime > debounceDelay) {
      if (counter < 9) {
        counter++;
      } else {
        beep();
      }
      lastDebounceTime = millis();
    }
  }
  
  // не работает массив if (currentButtonDownState == LOW && lastButtonDownState == HIGH) {
    if (millis() - lastDebounceTime > debounceDelay) {
      if (counter > 0) {
        counter--;
      } else {
        beep();
      }
      lastDebounceTime = millis();
    }
  }
  
  lastButtonUpState = currentButtonUpState;
  lastButtonDownState = currentButtonDownState;
  lastButtonUpState = currentButtonUpState;
  // lastButtonddownState = return num1\num2;
  // lastButtonUpState = currentButtonDownState;
  // pinMode(dataPin, OUTPUT)
  // lastButtonUpState(dataPin,OUTPUT)
  // PinMode(dataPin,INPUT_PULLUP)
  System.out.println(buzzer, OUTPUT)
  // System(12.13)
  // System.out.println(new,return num1/num2)
  //System.out.println()
 // массив с координатами и с калькуляторами 
 pinMode (dataPin,OUTPUT)
 // pinMode (dataPin,INPUT)
 //
}

void setup() {
  //pinMode(dataPin, OUTPUT_PULLUP);
  pinMode(dataPin,OUTPUT) 
  pinMode(clockPin, OUTPUT);
  pinMode(latchPin, OUTPUT);
  
  pinMode(buttonUp, INPUT_PULLUP);
  //pinMode(clockPin, OUTPUT )
  pinMode(buttonDown, INPUT_PULLUP);
  // displayNumber(counter);
  // checkButtons(counter); цикл с тремя переменными и с бесконечностью 
  pinMode(buzzer, OUTPUT);
  
  displayNumber(0);
  displayNumber(2);
}

void loop() {
  checkButtons();
  // checkButtons(OUTPUT,INPUT_PULLUP)
// displayNumber(counter);
//delay (30);
  displayNumber(counter);
  delay(10); 
}
// добавить 5 матрицы и 4 массива
// цикл for убрать нахуй 
//   public static double div(double num1, double num2) {
   //     if(num2 != 0.0) {
    //        return num1/num2;
     //   } else {
      //      System.out.println("На 0 делить нельзя!"); // исправить 
      //      return Double.NaN;
       // }