int buttonpin=5;

void setup() {
pinMode(buttonpin,INPUT);
Serial.begin(9600);

  // put your setup code here, to run once:

}

void loop() {
int buttonstate= digitalRead(buttonpin);
delay(200);
if (buttonstate==1){Serial.println("button is pressed");
}
else if(buttonstate==0){Serial.println("button is not pressed");}
else {
  Serial.println("button is not pressed");
  delay(1000);
}
  // put your main code here, to run repeatedly:

}