Temperature Sensor

#include <xc.h>
#include <stdio.h>
#define _XTAL_FREQ	64000000L

#define LCD_DATA_TRIS	TRISD
#define LCD_RS_TRIS	TRISAbits.TRISA2
#define LCD_E_TRIS	TRISAbits.TRISA3
#define LCD_DATA	LATD
#define LCD_RS	LATAbits.LATA2
#define LCD_E	LATAbits.LATA3
#define LED1		LATBbits.LATB0
#define LED2		LATBbits.LATB1
#define LED3		LATBbits.LATB2
#define HEATER	LATBbits.LATB4
#define FAN		LATBbits.LATB5

void init_ADC(void);		//Initialize ADC
void setup (void);
void delay (unsigned int x);
void lcd_init8(void);
void lcd_data(unsigned char data);
void lcd_cmd(unsigned char data);
void lcd_setCursor (unsigned char col, unsigned char row);
void lcd_clear (void);

unsigned int ADCResult=0;
float ActualTemp;
unsigned char stringKeyActual[10];

void main(void)
 {
   unsigned char i;
    OSCCON=0x76;
    TRISD	= 0x00;
    PORTD 	=0x00;
    TRISBbits.TRISB0=0;
    TRISBbits.TRISB1=0;
    TRISBbits.TRISB2=0;
    TRISBbits.TRISB4=0;
    TRISBbits.TRISB5=0;
    init_ADC();
    setup();
    lcd_init8();

    lcd_setCursor (0,0);
    printf("Hello");
    lcd_setCursor(0,1);
    printf("measurement");
    delay (100);
    lcd_setCursor (0,0);
    printf("Digital");
    lcd_setCursor(0,1);
    printf("Termometer");
    delay (100);
    lcd_clear();
    HEATER = 0;
    FAN = 0;
    while(1)
       {
	 ADCResult = 0;
	  ActualTemp = (ADCResult*5.0)/10.24;		//conver data into temperature (LM35 produces 10mV per degree celcius)
	  sprintf (stringKeyActual, "%.2g", ActualTemp );		//comnvert voltage to string
	  lcd_setCursor (0,0);
	  printf("Temperature");
	  lcd_setCursor(0,1);
	  printf("C");
       }
	  if (ActualTemp > 40)
	  {
	     LED3=1;
	     FAN=1;
	  }

	  if (ActualTemp < 41 && ActualTemp > 29)
	  {
	     LED2=1;
	     FAN=1;
	  }

	   if (ActualTemp < 30)
	  {
	     LED1=1;
	     HEATER=1;
	  }}
    void lcd_init8(void)
    {
       LCD_DATA_TRIS = 0;
       LCD_RS_TRIS = 0;
       LCD_E_TRIS = 0;
       lcd_cmd(0x38);
       lcd_cmd(0x0c);
       lcd_cmd(0x06);
       lcd_cmd(0x80);	}

       void putch (unsigned char data)
       {
	  LCD_DATA = data;
	  LCD_RS =1;
	  LCD_E =1;
	  delay (1);
	  LCD_E = 0;}

	  void lcd_cmd(unsigned char data)
	  {
	     LCD_DATA = data;
	     LCD_RS = 1;
	     LCD_E =1;
	      delay (1);
	      LCD_E = 0;}

	void lcd_setCursor (unsigned char col, unsigned char row);
	    {
	    lcd_cmd(row*0x40+col+0x80);
        delay (1);
	   }

	 void lcd_clear(void)
	    {
	       lcd_cmd(0x01); delay(10);
	       }

      void setup (void)
{
      ADCON1 = 0b00110000;
      ADCON2 = 0b100000011;
      LATA = 0x00;
      LATB = 0X00;
      LATC = 0x00;
      LATD = 0x00;
      LATE = 0x00;
}

void delay (unsigned int x)
{
   for (;x>0;x--)__delay_ms(1);
  }