int button1 = 0;
int button2 = 0;
int button3 = 0;
void setup() {
 pinMode(16, INPUT_PULLUP);
 pinMode(17, INPUT_PULLUP);
 pinMode(18, INPUT_PULLUP);
  Serial.begin(115200);
}

void loop() {
  button1 = digitalRead(16);
  if(button1 == 0){
    Serial.println("Zaki");
  }
  button2 = digitalRead(17);
  if(button2 == 0){
    Serial.println("Salampessy");
  }
  button3 = digitalRead(18);
  if(button3 == 0){
    Serial.println("Zaki Salampessy");
  }
  else{
    Serial.println("-----");
  }
}