const int ledPin = 13; 
int numberOfBlinks = 0; 

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

  Serial.println("Hello! I'm ready to blink an LED.");
  Serial.println("Please enter the number of blinks (e.g., 5) and press Enter:");
}

void loop() {

  if (Serial.available() > 0) {
    
    String inputString = Serial.readStringUntil('\n');

   
    numberOfBlinks = inputString.toInt();

   
    if (numberOfBlinks > 0) {
      Serial.print("Blinking the LED ");
      Serial.print(numberOfBlinks);
      Serial.println(" times...");

      
      for (int i = 0; i < numberOfBlinks; i++) {
        digitalWrite(ledPin, HIGH); 
        delay(500);                 
        digitalWrite(ledPin, LOW);  
        delay(500); 
      }                
      Serial.println("Blinking complete!");
      Serial.println("\nPlease enter a new number of blinks and press Enter:");
    } else {
      Serial.println("Invalid input. Please enter a positive number.");
      Serial.println("Please enter the number of blinks (e.g., 5) and press Enter:");
    }
  }
}