int ledState = HIGH;
int buttonState;      
int lastButtonState = LOW; 

unsigned long lastDebounceTime = 0; 
unsigned long debounceDelay = 50;   

int num = 0;

void setup() {
  Serial.begin(9600);
  for (int i{2}; i<9; i++) {
    pinMode(i, OUTPUT);
  }
  pinMode(12, INPUT);
}


void loop() {

  int reading = digitalRead(12);
  // Serial.println(digitalRead(12));
  if (reading != lastButtonState) {
    lastDebounceTime = millis();
  }
  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading != buttonState) {
      buttonState = reading;
      if (buttonState == HIGH) {
        num = (num+1)%10;

      }
    }
  }
  Serial.println(num);
  digitalWrite(2, num == 1 || num == 4);
  digitalWrite(3, 4 < num && num < 7);
  digitalWrite(4, num == 2);
  digitalWrite(5, !((num+2)%3));
  digitalWrite(6, num == 1 || num == 9 || num == 7 || (num > 2 && num < 6 ));
  digitalWrite(8, (num > 0 && num < 4) || num == 7);
  digitalWrite(7, num < 2 || num == 7);
  


 


 
  lastButtonState = reading;
}