const int LED=10;
const int Button=12;
char blinksInput;
int intBlinks;

void setup() {
  Serial.begin(9600);

  pinMode(LED, OUTPUT);
  pinMode(Button, INPUT);
}

void loop() {
  // send data only when you receive data:
  if (Serial.available() > 0) {
    Serial.println("Enter a number (1-9): ");
    blinksInput = Serial.read();  // enter # of blinks
    Serial.write(blinksInput);    // read back # of blinks
    if (blinksInput >= '0' && blinksInput <= '9') {
      intBlinks = blinksInput - '0';  // convert user input to integer
    }
  }

  if (digitalRead(Button)==HIGH){
    for (int i=0; i<intBlinks; i++) {
      digitalWrite(LED, HIGH);
      delay(500); // Wait for 1000 millisecond(s)
      digitalWrite(LED, LOW);
      delay(500); // Wait for 1000 millisecond(s)
      }
    intBlinks = 0;
  }
}