uint8_t pines[7] = {
  22, // A
  23, // B
  4,  // C
  17, // D
  18, // E
  21, // F
  19 // G
};

void setup() {

  for(uint8_t segment = 0; segment < 7; segment++) {
    pinMode(pines[segment], OUTPUT); 
  }
}

void loop() {
  for(uint8_t segment = 0; segment < 7; segment++) {
    digitalWrite(pines[segment], HIGH);
    delay(700);
    digitalWrite(pines[segment], LOW);
  } 
}