Arduino program to connect a led through push button

Arduino program to connect a led through push button and use the if else Statement 

int buttonState = 0;
void setup()
{
   pinMode(2, INPUT);
   pinMode(LED_BUILTIN, OUTPUT);
}
void loop()
{
   buttonState = digitalRead(2);
   if (buttonState == HIGH) {
    digitalWrite(LED_BUILTIN, HIGH);
   } else {
    digitalWrite(LED_BUILTIN, LOW);
   }
   delay(10); 
}