const int lm35Pin = A5;  
const int numLEDs = 10;
const int ledPins[numLEDs] = {1,2, 3, 4, 5, 6, 7, 8, 9, 10};  
const int temperatureThresholds[numLEDs - 1] = {10, 20, 30, 40, 50, 60, 70, 80, 90};  

void setup() {
  
  for (int i = 0; i < numLEDs; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  int temperature = analogRead(lm35Pin);
  float celsius = (temperature * 5.0 / 1024.0) * 100.0;
  updateLEDs(celsius);

  delay(1000);  
}

void updateLEDs(float celsius) {
  for (int i = 0; i < numLEDs; i++) {
    if (i > 0 && celsius >= temperatureThresholds[i - 1] && celsius < temperatureThresholds[i]) {
      for (int j = 0; j <= i; j++) {
        digitalWrite(ledPins[j], HIGH);
      }
      for (int j = i + 1; j < numLEDs; j++) {
        digitalWrite(ledPins[j], LOW);
      }
    } 
    else {
      digitalWrite(ledPins[i], LOW);
    }
  }
}