int Button1Pin = 3;
int Button1Value = 0;
int Button2Pin = 4;
int Button2Value = 0;
int LEDPin = 2;

void setup() {
  // put your setup code here, to run once:
  pinMode(Button1Pin, INPUT);
  pinMode(Button2Pin, INPUT);
  pinMode(LEDPin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  Button1Value = digitalRead(Button1Pin);
  Button2Value = digitalRead(Button2Pin);
  if ((Button1Value != 0) && (Button2Value != 0))
    digitalWrite(LEDPin, HIGH);
  else 
    digitalWrite(LEDPin, LOW);
}