void setup() {
  Serial.begin(9600);
}

void loop() {
  for (int i = 0; i < 10; i++) {
    switch (i) {
      case 0:
        Serial.println(i);
        break;
      case 1:
        Serial.println(i);
        break;
      case 2:
        Serial.println(i);
        break;
      case 3:
        Serial.println(i);
        break;
      case 4:
        Serial.println(i);
        break;
      case 5:
        char test = 0;
        Serial.println(i);
        break;
      case 6:
        Serial.println(i);
        break;
      case 7:
        Serial.println(i);
        break;
      case 8:
        Serial.println(i);
        break;
      case 9:
        Serial.println(i);
        break;
    }
  }
  delay(1000);
}