void setup() {
  for(int i=2;i<=8;i++) pinMode(i,OUTPUT);
  pinMode(9,INPUT);
}

void loop() {
  if(digitalRead(9)== 1){
    sifir();
    }
if(digitalRead(9)==0){
  bir();

}

}
void sifir(){
  digitalWrite(2,1);
  digitalWrite(3,1);
  digitalWrite(4,1);
  digitalWrite(5,1);
  digitalWrite(6,1);
  digitalWrite(7,1);
  digitalWrite(8,0);
  }
void bir(){
  
  digitalWrite(2,0);
  digitalWrite(3,1);
  digitalWrite(4,1);
  digitalWrite(5,0);
  digitalWrite(6,0);
  digitalWrite(7,0);
  digitalWrite(8,0);  
  }