Arduino Temperature Control

1#include <LiquidCrystal.h>
2#include <Fuzzy.h>
3#include <FuzzyInput.h>
4#include  <FuzzySet.h>
5
6// select the pins used on the LCD panel
7LiquidCrystal lcd(8,  9, 4, 5, 6, 7);
8
9//   Instantiating an object library
10Fuzzy* fuzzy = new  Fuzzy();
11FuzzySet* cold = new FuzzySet(0,1,2,3);
12FuzzySet* good = new FuzzySet(  8,9,10, 11);
13FuzzySet* hot = new FuzzySet(13,14,15,16);
14
15//variable declaration
16int  x =3;
17int consigne=0;
18
19void setup() {  
20  //initialize serial communication  at 9600 bps:
21Serial.begin(9600);
22// set up the LCD's number of columns and  rows:
23lcd.begin(16, 2);
24
25 // FuzzyInput
26  FuzzyInput* temperature =  new FuzzyInput(3);
27  temperature->addFuzzySet(cold);
28  temperature->addFuzzySet(good);
29  temperature->addFuzzySet(hot);
30 
31  fuzzy->addFuzzyInput(temperature);
32
33lcd.print("temperature:");
34pinMode(3,OUTPUT);
35pinMode(13,INPUT);
36}
37
38void  loop() {
39boolean K1;
40int y,l,z;
41fuzzy->setInput(3, 0);
42   
43  y=analogRead(A1);
44  delay(50);
45  z=analogRead(A1);
46  delay(50);
47    l=temp(x,y);
48    z=temp(x,z);
49  
50    // Serial.println(l);
51    // Serial.println(z);
52     
53    l=0.4*l+0.6*z;
54    int c;
55        c = analogRead(A0);
56    Serial.println(c);
57    K1=semaphore(digitalRead(13));
58   // Serial.println(K1);
59   consigne = consigne_param(209,412,K1); // 209 et  412 compatible DF robot keypad
60  
61   Serial.print("Temperature: ");
62   Serial.print(cold->getPertinence());
63   Serial.print(", ");
64   Serial.print(good->getPertinence());
65   Serial.print(", ");
66   Serial.println(hot->getPertinence());
67   
68   lcd.setCursor(12, 0);
69   lcd.print(l);
70   lcd.setCursor(0,1);
71   lcd.print("consigne:");
72   lcd.setCursor(9,1);
73   lcd.print(consigne);
74
75}  
76//This function  is used to set the temperature value
77int temp (int coef,int lect)
78{
79  int  t;
80  t=lect/coef;
81  return(t);
82}
83//Using the buttons to change 'consigne'
84    int consigne_param(int up, int down, boolean semaph)
85      { //please declare  int consigne in the header
86        int c1;
87        c1 = analogRead(A0);
88        if (semaph)
89        {
90      if ((c1==up) && (consigne<16))
91    consigne  = consigne + 1;
92 
93   if ((c1==down) && (consigne>0))
94    consigne = consigne  - 1 ;
95        }
96    delay(100);
97   return (consigne);
98      }
99      //Start  operating mode
100      boolean semaphore(boolean mode )
101      {
102        return  (not mode);
103      }
104