const int relayPin = 13;   
const int buttonPin = 12;  
int buttonState = 0;       
void setup() {
  pinMode(relayPin, OUTPUT);         
  pinMode(buttonPin, INPUT_PULLUP);   
  Serial.begin(9600);
}
void controlMotor(bool turnOn) {
  if (turnOn) {
    digitalWrite(relayPin, HIGH);   
    Serial.println("Motor ON");
  } else {
    digitalWrite(relayPin, LOW);    
    Serial.println("Motor OFF");
  }
}
void loop() {
  buttonState = digitalRead(buttonPin);

  if (buttonState == LOW) {  
    controlMotor(true);
  } else {
    controlMotor(false);
  }
   delay(100); 
}