int A = 19;
int B = 18;
int C = 4;
int D = 2;
int E = 15;
int F = 21;
int G = 22;
int P = 5;
int pin_pos[] = {19, 18, 4, 2, 15, 21, 22, 5};
int one[] = {0, 1, 1, 0, 0, 0, 0};
int two[] = {1, 1, 0, 1, 1, 0, 1};
int three[] = {1, 1, 1, 1, 0, 0, 1};
int four[] = {0, 1, 1, 0, 0, 1, 1};
int five[] = {1, 0, 1, 1, 0, 1, 1};
int six[] = {1, 0, 1, 1, 1, 1, 1};
int seven[] = {1, 1, 1, 0, 0, 0, 0};
int eight[] = {1, 1, 1, 1, 1, 1, 1};
int nine[] = {1, 1, 1, 1, 0, 1, 1};
int zero[] = {1, 1, 1, 1, 1, 1, 0};
int* pointer[] = {zero, one, two, three, four, five, six, seven, eight, nine};

void openLight(int num){
  int* p = pointer[num];
  for (int i = 0; i < 10; i++){
    digitalWrite(pin_pos[i], p[i]);
  }
}
void closeLight(){
  for (int i = 0; i < 10; i++){
    digitalWrite(pin_pos[i], LOW);
  }
}

void setup() {
  // put your setup code here, to run once:
  pinMode(15, OUTPUT);

  for (int i:pin_pos){
    pinMode(i, OUTPUT);
    digitalWrite(i, LOW);
  }
  digitalWrite(P, LOW);
}



void loop() {
  // put your main code here, to run repeatedly:


  for (int i = 0; i < 10; i ++){
    openLight(i);
    delay(1000);
    closeLight();
  }
  delay(1000);
}