LED display stop watch for Arduino

Sketch.c

// アソードコモンのため0の場所が光る
int num[10][8] = {
  {0, 0, 1, 0, 1, 0, 0, 0}, // 0
  {1, 1, 1, 0, 1, 0, 1, 1}, // 1
  {0, 0, 1, 1, 0, 0, 1, 0}, // 2
  {1, 0, 1, 0, 0, 0, 1, 0}, // 3
  {1, 1, 1, 0, 0, 0, 0, 1}, // 4
  {1, 0, 1, 0, 1, 1, 0, 0}, // 5
  {0, 0, 1, 0, 1, 1, 0, 0}, // 6
  {1, 1, 1, 0, 1, 0, 0, 0}, // 7
  {0, 0, 1, 0, 0, 0, 0, 0}, // 8
  {1, 0, 1, 0, 0, 0, 0, 0}  // 9
};

int count = 0;

void setup() {
  // put your setup code here, to run once:
  for (int i = 0; i < 8; i++) {
    pinMode(i + 6, OUTPUT);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  showDisplay(count);
  
  count += 1;
  if (10 <= count) {
    count = 0;
  }
  
  delay(1000);
}

void showDisplay(int n) {
  // LED show
  for (int i = 0; i < 8; i++) {
    digitalWrite(i + 6, num[n][i]);
  }
}