float pi = 3.141;
int count = 1;

void setup() {  
  Serial.begin(9600);
  Serial.print("Serial-Beispiel ");  
  Serial.println("+++++++++++++++++++");
  Serial.print("Pi: ");
  Serial.println(pi, 2);  
  
}

void loop() {
  Serial.println("+++++++++++++++++++");
  Serial.print("Durchlauf: "); 
  Serial.println(count++);   
  delay(1000);     
}