Thermometer

1/*Note: This code has been tested under Arduino IDE 1.8.3
2  Temperature  Measurement
3  Reads an analog input on A0(output from LM35DZ), change it to the  real room temperature and print it to serial monitor.
4 */
5 
6float powerVoltage=5;//define  the power supply voltage.
7void setup() {
8  // initialize serial communication  at 9600 bits per second:
9  Serial.begin(9600);
10}
11void loop() {
12  float  temperature;
13  // read the input on analog pin 0:
14  float sensorValue = analogRead(A0);
15  // print out the value you read:
16  temperature=(sensorValue/1023)*powerVoltage*100;
17  Serial.print("The room temperature degree is:");
18  Serial.println(temperature,1);
19  delay(10000);        
20}