#define A 0
#define B 2
#define C 4
#define D 5
#define E 12
#define F 23
#define G 22

int LEDs[] = {A, B, C, D, E, F, G}

#define seven_segment_lookup {}

void setup() {
  for (int i = 0, i<=7; i++)
    pinMode(LEDs[i], OUTPUT);
  digitalWrite(A, HIGH);
}

void loop() {

}