int a = 2 ;
int b = 3 ;
int c = 4 ;
int d = 5 ;
int e = 6 ;
int f = 7 ;
int g = 8 ;
int point = 9 ;


void setup() {
pinMode(a, OUTPUT);
pinMode(b, OUTPUT);
pinMode(c, OUTPUT);
pinMode(d, OUTPUT);
pinMode(e, OUTPUT);
pinMode(f, OUTPUT);
pinMode(g, OUTPUT);
pinMode(point, OUTPUT);
}

void showNumber (int number)
{
  if (number != 1 && number !=4)
  digitalWrite(a, LOW);
  if (number != 5 && number !=6)
  digitalWrite(b, LOW);
  if (number != 2)
  digitalWrite(c, LOW);
  if (number != 1 && number != 4 && number != 7)
  digitalWrite(d, LOW);
  if (number == 2 || number == 6 || number == 8 || number == 0)
  digitalWrite(e, LOW);
  if (number != 1 && number != 2 && number != 7 && number != 3)
  digitalWrite(f, LOW);
  if (number != 0 && number != 7 && number != 1)
  digitalWrite(g, LOW);

}

void turnoff()
{
  digitalWrite(a, HIGH);
  digitalWrite(b, HIGH);
  digitalWrite(c, HIGH);
  digitalWrite(d, HIGH);
  digitalWrite(e, HIGH);
  digitalWrite(f, HIGH);
  digitalWrite(g, HIGH);
  digitalWrite(point, HIGH);
}

void loop() {
  for (int i=0; i<10; i++)
  {
    showNumber (i);
    delay(1000);
    turnoff();
  }
  
}