int display[7]={19,18,5,17,16,4,0};
int b1 = 12;
int b2 = 14;
void setup() {
    pinMode(b1, INPUT_PULLUP);
  pinMode(b2, INPUT_PULLUP);
  for(int i=0;i<7;i++)
  {
    pinMode(display[i], OUTPUT);
  }
}
void loop()
{
  int b1=digitalRead(b1);
  int b2=digitalRead(b2);
  if(b1==0)
  {
    all_off()
    digitalWrite(display[5], HIGH);
    digitalWrite(display[1], HIGH);
    digitalWrite(display[4], HIGH);
    digitalWrite(display[6], HIGH);
      }
  if(b2==0)
  {
    all_off()
     digitalWrite(display[2], HIGH);
    digitalWrite(display[4], HIGH);
    digitalWrite(display[1], HIGH);
    digitalWrite(display[3], HIGH);
    digitalWrite(dispaly[6], HIGH);
  }
  void all_off(){
  for (int i=0;i<7;i++)
  {
    digitalWrite(disp[i], LOW);
    }
}

}