int buttonpin_1 = 2;
int buttonpin_2 = 15;


void setup() {
  // put your setup code here, to run once:
  pinMode(buttonpin_1 , INPUT);
  pinMode(buttonpin_2 , INPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  int buttonState1 = digitalRead(buttonpin_1); 
  int buttonState2 = digitalRead(buttonpin_2);

  if (buttonState1 == LOW){ 
    Serial.println("push Button 1 is Pressed"); 
    delay(200); 
  }
  if (buttonState2 == HIGH){
    Serial.println("push Button 2 is pressed"); 
    delay(200);
  }
}