Arduino led brightness control

gistfile1.c

  
const int ledPin = 9;
const int switchPin = 2;
int buttonState = 0;
int multiplier = 0;
float buttonPressedCounter = 0.0;

void setup() {
  
  pinMode(ledPin, OUTPUT);
  pinMode(switchPin, INPUT);
  Serial.begin(9600);
  
}

void loop() { 
  buttonState = digitalRead(switchPin);
  
  if (buttonState == HIGH) {
    if (buttonPressedCounter > 2) {
      buttonPressedCounter = 0;
      multiplier += 5;
      Serial.print("MULTIPLIER : "); 
      Serial.println(multiplier);
      if (multiplier > 220) {
        multiplier = 0;
        analogWrite(ledPin, multiplier);  
      } else {
        analogWrite(ledPin, multiplier);
      }
      buttonPressedCounter = 0;
    } else {
      Serial.print("Button Press Counter : ");
      Serial.println(buttonPressedCounter);
      buttonPressedCounter++;
    }
  }
    
 }