Simple code which modelises a self reliant parasol on Arduino

selfReliantParasol.ino

const int relais      = 4;
const int switch_haut = 3; 
const int switch_bas  = 2;

const int photoresistance = A0;
const int anemometre      = A1;


void setup() 
{
  Serial.begin(9600);
  pinMode(relais, OUTPUT);
  pinMode(switch_haut, INPUT);
  pinMode(switch_bas, INPUT);
}


void loop()
{
  float luminosite = 0;
  luminosite = analogRead(photoresistance);
  Serial.print("Luminosite: ");
  Serial.print(luminosite);
  Serial.println(".");
  float vent = 0;
  vent = analogRead(anemometre);
  Serial.print("Vent: ");
  Serial.print(vent);
  Serial.println(" km/h.");
  
  if(vent <= 15)
  {
    if(luminosite >= 830)
    {
      while(digitalRead(switch_haut) == LOW)
      {
        digitalWrite(relais, HIGH);
      }
      digitalWrite(relais, LOW);
    }
  }

  else
  {
    while(digitalRead(switch_bas) == LOW)
    {
      digitalWrite(relais, LOW);
    }
    digitalWrite(relais, HIGH);
  }
  delay(300000);
}