int LED = 12;
int saklar1 = 2;
int saklar2 = 3;
int ab = 0;
void setup() {
  // put your setup code here, to run once:
  pinMode (LED, OUTPUT);
  pinMode (saklar1, INPUT_PULLUP);
  pinMode (saklar2, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(saklar1)==0){
    ab ++;
  }
  if (ab == 1) digitalWrite (LED, HIGH);
  if (ab == 2){
    digitalWrite (LED, LOW);
    ab = 0 ;
    }
    while (digitalRead(saklar1)==0);
  delay (100) ;
}