int LED[8];
int Sw[4];
int Data;


void allLED (bool State) {
  for (int i=0; i<=7; i++) {
    pinMode(LED[i], OUTPUT);
    digitalWrite(LED[i], State);
  }
}


void setup() {
  // put your setup code here, to run once:

for (int i=0; i<=7; i++) {
  LED[i]=i+3;                   //LED Pins start at 3 (3,4,5,6,7,8,9,10)
  pinMode(LED[i], OUTPUT);
  digitalWrite(LED[i], HIGH);   //Turn each light on as LEDs are defined
  delay(100);
  }
delay(700);
allLED(LOW);

for (int i=1; i<=3; i++) {
  Sw[i]=i+10;             //Switches start at pin 10+1 (11,12,13) 10 already used for LED
  pinMode(Sw[i], INPUT);
  digitalWrite(LED[i-1], digitalRead(Sw[i]));  //Show each Switch as it is defined
//  delay(100);
  }
delay(2000);
}  // end setup


void loop() {
  // put your main code here, to run repeatedly:

int Data=0;

//
//Trap for young players..If statement cannot compare a value with const HIGH - does not work.
//  if(digitalRead(Sw[1]==HIGH)) { bitSet(Data,0); }
//  Above statement will fail. Just omit ==HIGH and it will work fine.
//
//  if(digitalRead(Sw[1])) { bitSet(Data,0); }
//  Works fine
//
//  Comment from DIY Arduino/HERO Projects and Guides
//

for (int i=1; i<=3; i++) {
  if(digitalRead(Sw[i])==HIGH) { bitSet(Data,(i-1)); }
}

allLED (HIGH);
delay (600);
allLED (LOW);
digitalWrite(LED[Data], HIGH);     //Turn on correct LED
delay(600);                      //Wait a bit
}                                //Loop program,  do it again...