int led_1=10;
int led_2=11;
int led_3=12;
int led_4=13;
int led_5=9;
int ldr=A0;
void setup(){
pinMode(led_1, OUTPUT);
pinMode(led_2, OUTPUT);
pinMode(led_3, OUTPUT);
pinMode(led_4, OUTPUT);
pinMode(led_5, OUTPUT);

Serial.begin(9600);
}
void loop(){
  int sensor_value=analogRead(ldr);
  Serial.println(sensor_value);
  if(sensor_value>200){
    digitalWrite(led_1,HIGH);
     digitalWrite(led_2,HIGH);
      digitalWrite(led_3,HIGH);
       digitalWrite(led_4,HIGH);
        digitalWrite(led_5,HIGH);

  }
  else{
     digitalWrite(led_1,LOW);
     digitalWrite(led_2,LOW);
      digitalWrite(led_3,LOW);
       digitalWrite(led_4,LOW);
        digitalWrite(led_5,LOW);
     
  }
  

}