int onButton = 6;
int offButton = 5;

int digit1 = 10;
int digit2 = 9;
int digit3 = 8;
int digit4 = 7;

int dataPin = 13;
int latchPin = 12;
int clockPin = 11;


void setup(){
  pinMode(onButton, INPUT);
  pinMode(offButton, INPUT);

  pinMode(dataPin, OUTPUT);
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);

  pinMode(digit1, OUTPUT);
  pinMode(digit2, OUTPUT);
  pinMode(digit3, OUTPUT);
  pinMode(digit4, OUTPUT);

  digitalWrite(digit1, HIGH);
  digitalWrite(digit2, HIGH);
  digitalWrite(digit3, HIGH);
  digitalWrite(digit4, HIGH);
}

void loop(){
  if(digitalRead(onButton)==HIGH){
    //value for shiftOut
    digitalWrite(latchPin,LOW);
    //syntax : shiftOut(dataPin, clockPin, bitOrder, value)
    shiftOut(dataPin, clockPin, MSBFIRST, 1);
    digitalWrite(latchPin,HIGH);
  }
  if(digitalRead(offButton)==HIGH){
    //syntax : shiftOut(dataPin, clockPin, bitOrder, value)
    shiftOut(dataPin, clockPin, MSBFIRST, 0);
  }
  //Serial.println(digitalRead(onButton));
  //Serial.println(digitalRead(offButton));
}