Automated Dino Game using Arduino

#include <Servo.h>

Servo con_servo;

int ldr=A0;


void setup() {                                                    
  Serial.begin(9600);
  con_servo.attach(9);
  pinMode(ldr,INPUT);

}

void loop() {

  int x=analogRead(ldr);

  if(x<100){
    con_servo.write(4);
  }

  if(x>100){
    con_servo.write(20);
  }

  Serial.println(x);
  delay(0.4);
  

}