void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
String text = "How do you do?";
Serial.print("Hello, Arduino! "); Serial.println(text);
float p = 3.1415326535;
Serial.println(p, 4);
byte x = 55;
Serial.println(x, DEC);
Serial.println(x, HEX);
Serial.println(x, OCT);
Serial.println(x, BIN);
}

void loop() {
  // put your main code here, to run repeatedly:

}