const int N = 5;
int arr [N] = { 2, 3, 5, 4, 8 };
int sum = 0;

void setup() {
  Serial.begin(115200);
  
  for (int n = 0; n < N; n++)  {
     Serial.println (arr [n]);
     sum = sum + arr [n];
  }
  Serial.println (sum);
}

void loop() {
}