void setup() { //int counter = 0; Serial.begin(9600); Serial.println("---------------"); //Serial.println(counter); for(int counter = 0; counter < 10; counter++){ //counter++; [same as counter = counter + 1] // counter += 1; [same as counter = counter + 1] Serial.println('a', DEC); // get ascii decimal number value for -- a Serial.println('HATE'); Serial.println(counter); } } void loop() { // put your main code here, to run repeatedly: }