readTemperature()
Read temperature. dht_sensor.readTemperature(S, bForce)dht_sensor: a variable of type DHT. S: false/true - false by default. If true then the temperature will be returned in Fahrenheit otherwise in Celcius. bForce: false/true - false by default. If true then try to read the data even if the required time has not passed before the sensor can respond . float - Celcius/Fahrenheit - if error then NaN