Automatic Room Light Controller with visitor counter for single door

Code C - [expand]
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while (1){
    // assuming sensors are variables sA and sB, and lights switch is sL
    unsigned int People=0;  // counter for people inside the room
    char AllowNextCount=0;  // boolean indicating if allowing next count or not
    char InOut;             // 1 = entering; -1 = exiting
    
    if ((sA==0) && (sB==1)){
        // entering
        InOut = 1;
    }
    
    if ((sA==1) && (sB==0)){
        // exiting
        InOut = -1;
    }
    
    if ((sA==1) && (sB==1) && (AllowNextCount==1)){
        // only when both sensors are touched validate the people counter
        People += InOut;
        
        if (People > 0) sL = 1; // Turn/keep lights on as long as People greather than 0
        else sL = 0;            // otherwise, turn them off
        
        // count once then block counting until the same person has finished entering/exiting
        AllowNextCount=0;
    }
    
    if ((sA==0) && (sB==0)){
        // it gets 0;0 only when someone has finished entering/exiting
        // or at turn on; so now allow to counting again
        AllowNextCount=1;
    }
}

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#include <htc.h>
__CONFIG(0x3FF1);
 
#ifndef _XTAL_FREQ
    #define _XTAL_FREQ 4000000
#endif
 
// HD44780 controller based LCD display drivers for PIC10/12/16
// Driver is a personal work I made, you can download the LCD driver from:
// [url]https://www.edaboard.com/blog/1817/[/url]
#include "HD44780.h"
#include "HD44780.c"
 
#define sA RA0
#define sB RA1
#define sL RA2
 
void main(void){
    // TRIS registers
    TRISA = 0x03; // RA0 and RA1 are inputs
    TRISB = 0x00;
 
    // assuming sensors are variables sA and sB, and lights switch is sL
    unsigned int People=0;  // counter for people inside the room
    char AllowNextCount=0;  // boolean indicating if allowing next count or not
    short int InOut;        // 1 = entering; -1 = exiting
    
    // Initializing LCD
    LCD_Initialize();
    
    // Set data on display the first time
    LCD_Clear();
    LCD_WriteString("Counter: ");
    LCD_WriteNumber(People);
    LCD_WriteString("\nLights:  ");
    LCD_WriteNumber(sL);
    
    while (1){
        if ((sA==0) && (sB==1)){
            // entering
            InOut = 1;
        }
        
        if ((sA==1) && (sB==0)){
            // exiting
            InOut = -1;
        }
        
        if ((sA==1) && (sB==1) && (AllowNextCount==1)){
            // only when both sensors are touched validate the people counter
            People += InOut;
            
            if (People > 0) sL = 1; // Turn/keep lights on as long as People greather than 0
            else sL = 0;            // otherwise, turn them off
            
            // count once then block counting until the same person has finished entering/exiting
            AllowNextCount=0;
            
            // Update data on display
            LCD_Clear();
            LCD_WriteString("Counter: ");
            LCD_WriteNumber(People);
            LCD_WriteString("\nLights:  ");
            LCD_WriteNumber(sL);
        }
        
        if ((sA==0) && (sB==0)){
            // it gets 0;0 only when someone has finished entering/exiting
            // or at turn on; so now allow to counting again
            AllowNextCount=1;
        }
    }
}