Arduino Temperature Control

#include <LiquidCrystal.h>
#include <Fuzzy.h>
#include <FuzzyInput.h>
#include <FuzzySet.h>

// select the pins used on the LCD panel
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

//   Instantiating an object library
Fuzzy* fuzzy = new Fuzzy();
FuzzySet* cold = new FuzzySet(0,1,2,3);
FuzzySet* good = new FuzzySet( 8,9,10, 11);
FuzzySet* hot = new FuzzySet(13,14,15,16);

//variable declaration
int x =3;
int consigne=0;

void setup() {  
  //initialize serial communication at 9600 bps:
Serial.begin(9600);
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);

 // FuzzyInput
  FuzzyInput* temperature = new FuzzyInput(3);
  temperature->addFuzzySet(cold);
  temperature->addFuzzySet(good);
  temperature->addFuzzySet(hot);
 
  fuzzy->addFuzzyInput(temperature);

lcd.print("temperature:");
pinMode(3,OUTPUT);
pinMode(13,INPUT);
}

void loop() {
boolean K1;
int y,l,z;
fuzzy->setInput(3, 0);
   
  y=analogRead(A1);
  delay(50);
  z=analogRead(A1);
  delay(50);
    l=temp(x,y);
    z=temp(x,z);
  
    // Serial.println(l);
    // Serial.println(z);
     
    l=0.4*l+0.6*z;
    int c;
        c = analogRead(A0);
    Serial.println(c);
    K1=semaphore(digitalRead(13));
   // Serial.println(K1);
   consigne = consigne_param(209,412,K1); // 209 et 412 compatible DF robot keypad
  
   Serial.print("Temperature: ");
   Serial.print(cold->getPertinence());
   Serial.print(", ");
   Serial.print(good->getPertinence());
   Serial.print(", ");
   Serial.println(hot->getPertinence());
   
   lcd.setCursor(12, 0);
   lcd.print(l);
   lcd.setCursor(0,1);
   lcd.print("consigne:");
   lcd.setCursor(9,1);
   lcd.print(consigne);

}  
//This function is used to set the temperature value
int temp (int coef,int lect)
{
  int t;
  t=lect/coef;
  return(t);
}
//Using the buttons to change 'consigne'
    int consigne_param(int up, int down, boolean semaph)
      { //please declare int consigne in the header
        int c1;
        c1 = analogRead(A0);
        if (semaph)
        {
      if ((c1==up) && (consigne<16))
    consigne = consigne + 1;
 
   if ((c1==down) && (consigne>0))
    consigne = consigne - 1 ;
        }
    delay(100);
   return (consigne);
      }
      //Start operating mode
      boolean semaphore(boolean mode )
      {
        return (not mode);
      }