Combine a pair of switches and an LED.ino

int led = 9;           // the pin that the LED is attached to
int switch1 = 8;       // the pin that switch 1 is attached to
int switch2 = 7;       // the pin that switch 2 is attached to
boolean state1 = false;
boolean state2 = false;
int brightness = 0;    // how bright the LED is
int fadeAmount = 5;    // how many points to fade the LED by

void setup() {
  pinMode(led, OUTPUT);
  pinMode(state1, INPUT);
  pinMode(state2, INPUT);
}

void loop() {

  state1 = digitalRead(switch1);
  state2 = digitalRead(switch2);
  delay(1);

  // Neither of switchers is closed
  if (state1 == false && state2 == false) {

    analogWrite(led, brightness);
    brightness = brightness + fadeAmount;

    if (brightness == 0 || brightness == 255) {
      fadeAmount = -fadeAmount ;
    }
    delay(30);

  } else {

    // Switch 1 closed, the LED should be off.
    if (state1 == true) {
      digitalWrite(led, LOW);

    // Switch 2 closed, the LED should be on at some intermediate brightness.
    } else if (state2 == true) {
      analogWrite(led, brightness);
    }

  }

}