int led = 13;
int led1 = 12;
int led2 = 11;
int led3 = 10;
int led4 = 9;
int led5 = 8;
int led6 = 7;

int switchUpPin = 2;
int switchDownPin = 3;

int counter = 0;
int counter1 = 0;

int buttonUpState = 0;
int lastButtonUpState = 0;

int buttonDownState = 0;
int lastButtonDownState = 0;

int buttonUpState1 = 0;
int lastButtonUpState1 = 0;

int buttonUpState2 = 0;
int lastButtonUpState2 = 0;



void setup()
{
  Serial.begin(9600);

   pinMode(led, OUTPUT);
 pinMode(led1, OUTPUT);
 pinMode(led2, OUTPUT);
 pinMode(led3, OUTPUT);
 pinMode(led4, OUTPUT);
 pinMode(led5, OUTPUT);
 pinMode(led6, OUTPUT);

}

void loop()
{
  buttonUpState = digitalRead(switchUpPin);
  buttonDownState = digitalRead(switchDownPin);


  if (buttonUpState != lastButtonUpState)
  {
    if (buttonUpState == HIGH)
    {
      if(counter == 9)
      {
        counter = -1;
      }
      counter++;

      Serial.println(counter);
      changeNumber(counter);
      delay(300);
    }
    else
    {
        Serial.println("OFF");
    }
   delay(50);
  }


if (buttonDownState != lastButtonDownState)
  {
    if (buttonDownState == HIGH)
    {
      if(counter == 0)
      {
        counter = 10;
      }
      counter--;
      Serial.println(counter);
      changeNumber(counter);
      delay(300);
    }
    else
    {
        Serial.println("OFF");
    }
   delay(50);
  }
  changeNumber(counter);
}





void changeNumber(int buttonPress)
{
  switch (buttonPress)
  {
    //number 0
    case 0:
     digitalWrite(led, HIGH);
 digitalWrite(led1, HIGH);
  digitalWrite(led2, LOW);
 digitalWrite(led3, HIGH);
 digitalWrite(led4, HIGH);
 digitalWrite(led5, HIGH);
 digitalWrite(led6, HIGH);
      break;
    //number 1
    case 1:
      digitalWrite(led, HIGH);
 digitalWrite(led1, HIGH);
 digitalWrite(led2, LOW);
 digitalWrite(led3, LOW);
 digitalWrite(led4, LOW);
 digitalWrite(led5, LOW);
 digitalWrite(led6, LOW);
      break;
    //number 2
    case 2:
      digitalWrite(led, HIGH);
 digitalWrite(led1, LOW);
 digitalWrite(led2, HIGH);
 digitalWrite(led3, HIGH);
 digitalWrite(led4, LOW);
 digitalWrite(led5, HIGH);
 digitalWrite(led6, HIGH);
      break;
    //number 3
    case 3:
      digitalWrite(led, HIGH);
 digitalWrite(led1, HIGH);
 digitalWrite(led2, HIGH);
 digitalWrite(led3, HIGH);
 digitalWrite(led4, LOW);
 digitalWrite(led5, HIGH);
 digitalWrite(led6, LOW);
      break;
    //number 4
    case 4:
      digitalWrite(led, HIGH);
 digitalWrite(led1, HIGH);
 digitalWrite(led2, HIGH);
 digitalWrite(led3, LOW);
 digitalWrite(led4, HIGH);
 digitalWrite(led5,LOW);
 digitalWrite(led6, LOW);
      break;
    //number 5
    case 5:
     digitalWrite(led, LOW);
 digitalWrite(led1, HIGH);
 digitalWrite(led2, HIGH);
 digitalWrite(led3, HIGH);
 digitalWrite(led4, HIGH);
 digitalWrite(led5, HIGH);
 digitalWrite(led6, LOW);
      break;
    //number 6
    case 6:
     digitalWrite(led, LOW);
 digitalWrite(led1, HIGH);
 digitalWrite(led2, HIGH);
 digitalWrite(led3, HIGH);
 digitalWrite(led4, HIGH);
 digitalWrite(led5,HIGH);
 digitalWrite(led6, HIGH);
      break;
    //number 7
    case 7:
     digitalWrite(led, HIGH);
 digitalWrite(led1, HIGH);
 digitalWrite(led2, LOW);
 digitalWrite(led3, HIGH);
 digitalWrite(led4, LOW);
 digitalWrite(led5,LOW);
 digitalWrite(led6, LOW);
      break;
    //number 8
    case 8:
      digitalWrite(led, HIGH);
 digitalWrite(led1, HIGH);
 digitalWrite(led2, HIGH);
 digitalWrite(led3, HIGH);
 digitalWrite(led4, HIGH);
 digitalWrite(led5,HIGH);
 digitalWrite(led6, HIGH);
      break;
    //number 9
    case 9:
     digitalWrite(led, HIGH);
 digitalWrite(led1, HIGH);
 digitalWrite(led2, HIGH);
 digitalWrite(led3, HIGH);
 digitalWrite(led4, HIGH);
 digitalWrite(led5,HIGH);
 digitalWrite(led6, LOW);
      break;
  }


}