const int ledPin =  7;      // the number of the LED pin
const int buttonPin = 3;     // the number of the pushbutton pin

 
void setup() {
                         
 pinMode(7, OUTPUT); // initialize the LED pin as an output
 pinMode(3, INPUT); // initialize the pushbutton pin as an input
}

void loop() {


if(digitalRead(3)){     // read the state of the pushbutton value
  digitalWrite(7,LOW); 

}
else{
    digitalWrite(7,HIGH);

}
}