Arduino Coding

#include <Servo.h>

Servo gate;

int ir1 = 2;
int ir2 = 3;

void setup()
{
  pinMode(ir1, INPUT);
  pinMode(ir2, INPUT);

  gate.attach(9);

  gate.write(180);
}

void loop()
{
  int sensor1 = digitalRead(ir1);
  int sensor2 = digitalRead(ir2);

  if(sensor1 == 0)
  {
    gate.write(90);
  }

  if(sensor2 == 0)
  {
    gate.write(180);
  }
}