const int LEDPIN = 2; 
const int PushButton = 13;
void setup()
{
pinMode(LEDPIN, OUTPUT);
pinMode(PushButton, INPUT);
}

void loop()

{
if ( digitalRead(PushButton) == HIGH )
{ 
  digitalWrite(LEDPIN, HIGH);
}
else 
{
  digitalWrite(LEDPIN, LOW); 
}
}