Wireless design for theft monitoring CODING

#include <REGX51.H>
#include "lcd.c"

#define MAX_DELAY() delay(65000)

sbit RF_Sense=P1^2;
sbit buz=P1^0;

void intro()
{
 lcd_init();
 lcd_str("Wireless Design ",0x80);
 lcd_str("Theft Monitoring",0xc0);
 MAX_DELAY();MAX_DELAY();
 lcd_clr();
}

 void main()
 {
unsigned int i = 0, j= 0;
buz  = 1;
intro();
   while(1)
   {
lcd_str("Security Syst On",0x80);
lcd_str("No Theft Detectd",0xc0);
if(RF_Sense == 1)
{
buz  = 1;
while(RF_Sense == 1)
delay(50000);
}
else
{
lcd_str("Theft Detected   ",0xc0);delay(65000);delay(65000);buz  = 0;
while( 1);
}

;

   }
 }