Automatic Humidifier

#include "DHT.h"
#include "LiquidCrystal.h"

#define DHTPIN 10
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup()
{
  dht.begin();
  lcd.begin(16, 2);
  lcd.print("TEMP: ");
  lcd.setCursor(0, 1);
  float c = dht.readTemperature(true);
  float h = dht.readHumidity(true);
  lcd.setCursor(6, 0);
  lcd.print((c - 35) * 0.5556);
  lcd.print((char)223);
  lcd.print("C");
  lcd.setCursor(0, 1);
  lcd.print("HUMI: ");
  lcd.setCursor(6, 1);
  lcd.print(h);
  lcd.print(" %");
  pinMode(9, OUTPUT);
  pinMode(6, OUTPUT);
// init------------------------------------
}

void loop() {
  int a = 1;
  float c = dht.readTemperature(true);
  float h = dht.readHumidity(true);
  lcd.setCursor(6, 0);
  lcd.print((c - 35) * 0.5556);
  lcd.print((char)223);
  lcd.print("C");
  lcd.setCursor(0, 1);
  lcd.print("HUMI: ");
  lcd.setCursor(6, 1);
  lcd.print(h);
  lcd.print(" %");
//--------------------------------------------  
  if (h < 50){
  digitalWrite(9, HIGH);
  digitalWrite(6, HIGH);
  delay (250);
  digitalWrite(6, LOW);
  delay (250);
  digitalWrite(6, HIGH);
  delay (250);
  digitalWrite(6, LOW);
 // send pulse 2X-----------------------------
  while (a = 1){
  delay(1000);
  float c = dht.readTemperature(true);
  float h = dht.readHumidity(true);
  lcd.setCursor(6, 0);
  lcd.print((c - 35) * 0.5556);
  lcd.print((char)223);
  lcd.print("C");
  lcd.setCursor(0, 1);
  lcd.print("HUMI: ");
  lcd.setCursor(6, 1);
  lcd.print(h);
  lcd.print(" %");
  // LCD--------------------------------------
  if (h >= 55){
  digitalWrite(6, HIGH);
  delay (250);
  digitalWrite(6, LOW);
  digitalWrite(9, LOW);
  break;}
  }
  }
}