Arduino Code to connect a flame sensor and gas sensor

The code below is uded to interface arduino with a flame sensor and a gas sensor together:

int redLed = 12;

int greenLed = 13;

int smokeA0 = A0;

int flamePin = 11;

int Flame = HIGH;

int sensorThres=100;

void setup() 

{

  pinMode(redLed, OUTPUT);

  pinMode(greenLed,OUTPUT);

  pinMode(flamePin, INPUT);

  pinMode(smokeA0,INPUT);

  Serial.begin(9600);

}

void loop() 

{

  int analogSensor = analogRead(smokeA0);

  Flame = digitalRead(flamePin);

  if (Flame== LOW)

  {

    Serial.println("Fire!!!");

    digitalWrite(redLed, HIGH);

  }

  else

  {

    Serial.println("No worries");

    digitalWrite(redLed, LOW);

  }

  Serial.print("Pin A0: ");

  Serial.println(analogSensor);

  // Checks if it has reached the threshold value

  if (analogSensor > sensorThres)

  {

    digitalWrite(greenLed, HIGH);

  }

  else

  {

    digitalWrite(greenLed, LOW);

  }

  delay(100);

}