int relay = 7;
int button = 13;
int led = 12;
bool status = false;

void setup() {
  Serial.begin(9600);
  pinMode(relay, OUTPUT);
  pinMode(led, OUTPUT);
  pinMode(button, INPUT);
}

void loop() {
  int val = digitalRead(button);
  // Serial.println(val);
  if (val == 1) {
    status = !status;
    delay(500);
  }
  
    Serial.println(status);
    if (status) {
      digitalWrite(relay, HIGH);
    } else {
      digitalWrite(relay, LOW);
    }
}