#define button 2
#define led 8

void setup(){
  
  pinMode(led, OUTPUT);
  pinMode(button,INPUT);
}

void loop(){
  int n=digitalRead(button);
  if(n==LOW){
    delay(10);
    if(LOW==digitalRead(button)){
      digitalWrite(led, HIGH);

    }

  }
  else{
    delay(10);
    if(HIGH==digitalRead(button)){
      digitalWrite(led, LOW);
    }
  }
}