int lm_35=A3;
int led1=11;
int led2=12;
int led3=13;
void setup() 
{
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
 Serial.begin(9600);
}

void loop() 
{
   int temp_adc;
  float temp;
  temp_adc=analogRead(lm_35);
  temp=temp_adc*4.88;
  temp=temp/10;
  Serial.println("Temperature= ");
  Serial.println(temp);
  Serial.println("Degree Celsius");

  if(temp<100)
  {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    Serial.println("Temperature is very high");
  }
else if(temp>200)
{
digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
digitalWrite(led3, LOW);
Serial.println("Temperature is moderate");
}
else
{
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, HIGH);
  Serial.println("Temperature is very low");

}
delay(1000);
}