Arduino temperature sketch

ArduinoTemperature.c

#include <OneWire.h>
#include <DallasTemperature.h>

// pin connected to sensor
int tempPin = 7;
// define the onewire obj needed for connecting to onewire components
OneWire oneWire(tempPin);
// define dallas obj, makes it easier to read temp
DallasTemperature tempSens(&oneWire);

void setup() {
  // set up the serial console
  Serial.begin(9600);
  // initialise the temp sensor
  tempSens.begin(); 
}

void loop() {
  // get the current temperature 
  tempSens.requestTemperatures();
  // get the temperature in centigrade
  // index 0 as multiple temp sensors can be connected on same bus
  float t = tempSens.getTempCByIndex(0);
  Serial.println(t); 
  delay(100);
}