If Pressed RA$3$ button, what will happen?

void main$()$ f

unsigned short current$\_$duty, old$\_$duty, current$\_$duty$1,$ old$\_$duty$1$;

PORTA $=255$;

TRISA $=255$;

PORTB $=0$;

TRISB $=0$;

PORTC $=0$;

TRISC $=0$;

PWM$1\_$Init$(5000)$;

PWM$2\_$Init$(5000)$;

current$\_$duty $=16$;

current$\_$duty $1=16$;

PWM$1\_$Start$()$:

PWM$2\_$start$()$;

PWM$1\_$Set$\_$Duty$($current$\_$duty$)$:

PWM$2\_$Set$\_$Duty$($current$\_$duty$1)$;

while $(1)$ I

if $($RAO$\_$bit$)($

Delay$\_$ms$(40)$;

current$\_$duty$++$;

PWM$1\_$Set$\_$Duty$($current$\_$duty$)$:

I

if $($RA$1\_$bit$)\{$

Delay$\_$ms$(40)$;

current$\_$duty $-$ ; $//$ decrement current$\_$duty

PWM$1\_$Set$\_$Duty$($current$\_$duty$)$:

I

if $($RA$2\_$bit$)1$

Delay$\_$ms$(40)$;

current$\_$duty$1++$; $//$ increment current$\_$duty$1$

PWM$2\_$Set$\_$Duty$($current$\_$duty$1)$;

l

if $($RA$3\_$bit$)1$

Delay$\_$ms$(40)$;

current$\_$duty$1-\frac{,}{\frac{?}{?}}$ decrement current$\_$duty$1$

PWM$2\_$Set$\_$Duty$($current$\_$duty$1)$;

I

Delay$\_$ms$(5)$:

H

$//$ configure PORTA pins as input

$\frac{\frac{?}{?}}{?}$ set PORTB to $0$

$//$ designate PORTB pins as output

$//$ set PORTC to $0$

$//$ designate PORTC pins as output

$//$ Initialize PWM$1$ module at $5KHz$

$//$ Initialize PWM$2$ module at $5KHz$

$//$ initial value for current$\_$duty

$//$ initial value for current$\_$duty$1$

$//$ start PWM$1$

$//$ start PWM$2$

$//$ endless loop

$//$ button on RAO pressed

$//$ button on RA$1$ pressed

set current duty for PWM$1$

hiset current duty for PWM$2$

$//$ button on RA$2$ pressed

f $($RA$2\_$bit$)1//$ button on Delay$\_$ms$(40)$; current$\_$duty$1++$; $//$ incre PWM$2\_$Set$\_$Duty$($current$\_$duty$1)$;

$//$ button on RA$3$ pressed

Delay$\_$ms$(5)$: $//$ slow down change pace a little

$//$ slow down change pace a little