const int buttonPin=4;
const int ledPin=5;
int buttonState=0;
void setup()
Serial.begin(115200);
pinMode(buttonPin,INPUT);
pinMode(ledPin,OUTPUT);
void loop()
{
buttonState=digitalRead(buttonPin);
Serial.println(buttonState);
if(buttonState==HIGH)
{
digitalWrite(ledPin, HIGH);
}
else{
digitalWrite(ledPin, LOW);
}
}