#include <OneWire.h>
#include <DallasTemperature.h>
// Data wire is conntec to the Arduino digital pin 4
#define ONE_WIRE_BUS 4
// Setup a onewire instance to communicate with any OneWire devices
OneWire oneWire (ONE_WIRE_BUS);
// Pass our onewire reference to Dallas Temperature sensor
DallasTemperature sensors (&oneWire);
void setup(void)
{
  // Start serial communication for debugging purposes
  Serial.begin(9600);
  // Start up the library
  sensors.begin();
}
void loop(void) {
  // Call sensors.requestTemperatures () to issue a global temperature and Requests to all devices on the bus
  sensors.requestTemperatures();
  Serial.print("Celsius temperature: ");
  // why "byIndex"? You can have more than one IC on the same bus. refers to the first IC on the wire Serial.print(sensors.getTempCBy Index (0));
  Serial.print("- Fahrenheit temperature: ");
  Serial.println(sensors.getTempFByIndex(0));
  delay(1000);
}