const int led[] = {2,3,4,5,6};
const int btn[] = {7,8,9,10,11};

void setup () {
  for (int i = 0; i < 5; i++){
    pinMode(led, OUTPUT);
  }
  for (int i = 0; i < 5; i++){
    pinMode(btn[i], INPUT_PULLUP);
  }
}
void loop() {
  
  for (int i = 0; i < 5; i++){
    if (digitalRead(btn[i]) == LOW){
      digitalWrite(led[i], HIGH);
    }
    else {
      digitalWrite(led[i], LOW);
    }
  }
}