int ledPin = 13;  // LED connected to digital pin 13
int inPin = 7;    // pushbutton connected to digital pin 7 - the other side to GROUND !!
int val = 0;      // variable to store the read value

void setup() {
  pinMode(ledPin, OUTPUT);  // sets the digital pin 13 as output
  pinMode(inPin, INPUT_PULLUP);    // sets the digital pin 7 as input
}

void loop() {
  // LOGIC WILL BE REVERED - RELEASE BUTTON WILL YIELD HIGH AND PRESSED LOW !! 
  val = digitalRead(inPin);   // read the input pin
  digitalWrite(ledPin, val);  // sets the LED to the button's value
}