#include <Servo.h>

const int switch1Pin = 13;   // Pin for switch 1
const int switch2Pin = 12;   // Pin for switch 2
const int switch3Pin = 11;   // Pin for switch 3

const int servoPin = 9;     // Pin for the servo motor

Servo servo;

void setup() {
  servo.attach(servoPin);   // Attaches the servo to the specified pin
  pinMode(switch1Pin, INPUT_PULLUP);   // Sets switch 1 pin as input with internal pull-up resistor
  pinMode(switch2Pin, INPUT_PULLUP);   // Sets switch 2 pin as input with internal pull-up resistor
  pinMode(switch3Pin, INPUT_PULLUP);   // Sets switch 3 pin as input with internal pull-up resistor
}

void loop() {
  int switch1State = digitalRead(switch1Pin);   // Read the state of switch 1
  int switch2State = digitalRead(switch2Pin);   // Read the state of switch 2
  int switch3State = digitalRead(switch3Pin);   // Read the state of switch 3

  if (switch1State == LOW) {
    // Switch 1 is pressed, instruct the servo to -90 degrees (end of clockwise direction)
    servo.write(0);
  }
  else if (switch2State == LOW) {
    // Switch 2 is pressed, instruct the servo to 0 degrees (middle of rotation)
    servo.write(90);
  }
  else if (switch3State == LOW) {
    // Switch 3 is pressed, instruct the servo to +90 degrees (end of counterclockwise direction)
    servo.write(180);
  }
}