$3.(1010)$ What's the output of the following code at each posi on$.$

void a$($int x$[],$ int y$)\{$

x$[0]=$ y;

y $=$ x$[1]$;

$\}$

void b$($int x$[],$ int &y$)\{$

x$[2]=$ y;

y $=$ x$[3]$;

$\}$

void c$($int x$[],$ int y$)\{$

if $($y $<2)$ return;

cout $<<$ x$[$y $+1]$;

c$($x$,$ y$/2)$;

$\}$

int main$()\{$

int x$[6]=\{1,2,3,4,5,6\}$;

int y $=3,$ z $=4$;

cout $<<$ x$[$y $\%$ z$]<<$ endl; $//$ line $($a$)$

a$($x$,$ y$)$;

cout $<<$ x$[0]<<$ y $<<$ endl; $//$ line $($b$)$

b$($x$,$ z$)$;

cout $<<$ x$[2]<<$ z $<<$ endl; $//$ line $($c$)$

c$($x$,4)$; cout $<<$ endl; $//$ line $($d$)$

for $($int i $=0$; i $<4$; i$++)$ c$($x$,$ i$)$; cout $<<$ endl; $//$ line $($e$)$

$\}$