void number(int x){
if (x==1){
digitalWrite(2,0);
digitalWrite(3,1);
digitalWrite(4,1);
digitalWrite(5,0);
digitalWrite(6,1);
digitalWrite(7,1);
digitalWrite(8,1);

}
else if(x==2){
digitalWrite(2,1);
digitalWrite(3,0);
digitalWrite(4,0);
digitalWrite(5,0);
digitalWrite(6,0);
digitalWrite(7,1);
digitalWrite(8,0);
}
else if(x==3){
digitalWrite(2,0);
digitalWrite(3,0);
digitalWrite(4,1);
digitalWrite(5,0);
digitalWrite(6,0);
digitalWrite(7,1);
digitalWrite(8,0);
}
else if(x==4){
digitalWrite(2,0);
digitalWrite(3,1);
digitalWrite(4,1);
digitalWrite(5,0);
digitalWrite(6,1);
digitalWrite(7,0);
digitalWrite(8,0);
}
else if(x==5){
digitalWrite(2,0);
digitalWrite(3,0);
digitalWrite(4,1);
digitalWrite(5,1);
digitalWrite(6,0);
digitalWrite(7,0);
digitalWrite(8,0);
}
else if(x==6){
digitalWrite(2,0);
digitalWrite(3,0);
digitalWrite(4,0);
digitalWrite(5,1);
digitalWrite(6,0);
digitalWrite(7,0);
digitalWrite(8,0);
}

else if(x==7){
digitalWrite(2,0);
digitalWrite(3,1);
digitalWrite(4,1);
digitalWrite(5,0);
digitalWrite(6,0);
digitalWrite(7,1);
digitalWrite(8,1);
}
else if(x==8){
digitalWrite(2,0);
digitalWrite(3,0);
digitalWrite(4,0);
digitalWrite(5,0);
digitalWrite(6,0);
digitalWrite(7,0);
digitalWrite(8,0);
}
else if(x==9){
digitalWrite(2,0);
digitalWrite(3,0);
digitalWrite(4,1);
digitalWrite(5,0);
digitalWrite(6,0);
digitalWrite(7,0);
digitalWrite(8,0);
}

}

void setup() {
  // put your setup code here, to run once:
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
pinMode(5,OUTPUT);
pinMode(6,OUTPUT);
pinMode(7,OUTPUT);
pinMode(8,OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(13,1);
number(9);
delay(1000);
number(8);
delay(1000);
number(7);
delay(1000);
number(6);
delay(1000);
digitalWrite(13,0);
number(5);
delay(1000);
number(4);
delay(1000);
number(3);
delay(1000);
number(2);
delay(1000);
number(1);
delay(1000);
}