// Name:   Choi Ka Ho
// No.:    240021155
// Class:  EG114403/1D
// Program:Ex_6 Q1

#define LED_Out_Pin 25
#define SW_In_Pin 15

void setup()
{
  Serial.begin(115200);
  pinMode(LED_Out_Pin, OUTPUT);
  pinMode(SW_In_Pin, INPUT_PULLUP);
}

void loop()
{
  if (digitalRead(SW_In_Pin))
  {
    digitalWrite(LED_Out_Pin, LOW);
    //If not press Push-button LED off
  }
  else
  {
    digitalWrite(LED_Out_Pin, HIGH);
    delay(100);  //Push-button pressed LED flashes at 5Hz
    digitalWrite(LED_Out_Pin, LOW);
    delay(100);  //100ms
  }
}