const int lm35=A0;
void setup()
{
pinMode(lm35, INPUT);
Serial.begin(9600);
}
void loop()
{
  int val=analogRead(lm35);
//convert voltege to celsius
float temp=(val*5.0/1024.0)*100.0;
Serial.print("\nTemperature=");
Serial.print(temp);
Serial.print("c");
delay(1000);
}