int buttonPin = 7;	                    // the number of the pushbutton pin
int ledPin =  12;	                      // the number of the LED pin
int buttonState = 0;	                  // variable for reading the pushbutton status
void setup() {	
pinMode(ledPin, OUTPUT); 	              // initialise the ledPin as an output:
pinMode(buttonPin, INPUT);	            // initialise the buttonPin as an input:
}
void loop() {
buttonState = digitalRead(buttonPin); 	// read the state of the pushbutton value:
if (buttonState == HIGH) {		          // check if the pushbutton is pressed.
digitalWrite(ledPin, HIGH); 	          // turn LED on if the buttonState is HIGH:
} else {
digitalWrite(ledPin, LOW);	            // turn LED off if the buttonState is LOW:
}
}