#define poten  A5 
#define led 13
#define led2  12 
#define led3  11
#define led4  10
#define led5  9
void setup() {
  // put your setup code here, to run once:
 pinMode (poten ,INPUT );
 pinMode (led,OUTPUT );
 pinMode (led2,OUTPUT );
 pinMode (led3,OUTPUT);
 pinMode (led4,OUTPUT );
 pinMode (led5,OUTPUT);
 Serial.begin(9600);
}
void loop() {
  // put your main code here, to run repeatedly:
     float value = analogRead( poten );
     float percent = (value/1023)*100;
     if(percent >= 20) 
     {
    digitalWrite (led,HIGH);
    digitalWrite (led2  ,LOW);
    digitalWrite (led3  ,LOW);
    digitalWrite (led4  ,LOW);
    digitalWrite (led5,LOW );
}
 if (percent >= 40)
{
  digitalWrite (led,LOW  );
  digitalWrite (led2 ,HIGH );
  digitalWrite (led3 ,LOW );
  digitalWrite (led4 ,LOW);
  digitalWrite (led5 ,LOW);
}
 if (percent >=60)
{
digitalWrite (led,LOW);
  digitalWrite (led2 ,LOW);
  digitalWrite (led3 , HIGH);
  digitalWrite (led4 ,LOW);
  digitalWrite (led5 ,LOW);
}
 if (percent >= 80)
{
digitalWrite (led  ,LOW);
digitalWrite (led2 ,LOW);
digitalWrite (led3 ,LOW);
digitalWrite (led4 , HIGH);
digitalWrite (led5 ,LOW);
}
if (percent >= 80)
{ 
  digitalWrite (led,LOW);
  digitalWrite (led2 ,LOW);
  digitalWrite (led3 ,LOW);
  digitalWrite (led4 , HIGH);
  digitalWrite (led5 ,LOW);
}
 if (percent >= 100)
 {
  digitalWrite (led,LOW);
  digitalWrite (led2 ,LOW);
  digitalWrite (led3 ,LOW);
  digitalWrite (led4 ,LOW);
  digitalWrite (led5 , HIGH);
 }
 if (percent <= 20)
 digitalWrite (led,LOW);
}