#define RED 9
#define BLUE 8
#define GREEN 7
int data;
float v;
void setup()
{
  Serial.begin(9600);
    pinMode(RED, INPUT);
    pinMode(BLUE, INPUT);
    pinMode(GREEN, INPUT);
    Serial.println("insert a NUMBER");
}
void loop()
{
 data=map(data, 0, 100 ,1, 4);
  v = (data / 1023.0) * 5 ;
  if (data == 1)
  {
    digitalWrite(GREEN, 1);
    digitalWrite(BLUE, 0);
    digitalWrite(RED, 0);
    delay(500);
  }
  if (data ==2)

  {
    digitalWrite(GREEN, 0);
    digitalWrite(BLUE, 1);
    digitalWrite(RED, 0);
    delay(500);
  }
   if (data == 3)
  {
    digitalWrite(GREEN, 0);
    digitalWrite(BLUE, 0);
    digitalWrite(RED, 1);
    delay(500);
  }
  if(data == 4)
  {
  digitalWrite(GREEN ,1);
  digitalWrite(BLUE , 1);
  digitalWrite(RED ,1);
  delay(500);
}
}