int temp=45;  //variable to hold temperature
int redLED=12; //variable to hold LED pin
int GreenLED=11;
int blueLED=4;
void setup() {
  // put your setup code here, to run once:
    pinMode(redLED, OUTPUT);  // redLED pin configured as an OUTPUT pin
    pinMode(GreenLED, OUTPUT);
    pinMode(blueLED, OUTPUT);
  }

void loop() {
  if(temp>35) { digitalWrite(redLED, HIGH);
      digitalWrite(GreenLED, LOW);
      digitalWrite(blueLED, LOW);
      temp=33;
      delay(500);
    }
    
  else if(temp>30) {
      digitalWrite(GreenLED, HIGH);
      digitalWrite(redLED, LOW);
      digitalWrite(blueLED, LOW);
      temp=22;
      delay(500);
    }
  
   else {
    digitalWrite(blueLED, HIGH);
    digitalWrite(redLED, LOW);
    digitalWrite(GreenLED, LOW);
    temp=45;
    delay(500);
   } 
}