bool led = false;

void setup() {
  // put your setup code here, to run once:
pinMode(10, OUTPUT);
pinMode(5, INPUT_PULLUP);
pinMode(4, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedly:


if (!digitalRead(5) && !led){
led = true;
delay(50);
}
if(!digitalRead(4) && led){
led = false;
delay(50);
}
digitalWrite(10, led);

}