What is the output of the following code?

void f$2($char& a$)$

$\{$

$\}$

$a++$;

void $f1(charB[],$charx$)$

$\{$

$\}$

for $($int $i=0$;$B[i]$;$i++$

if $)==(x$

f$2($B$[$i$])$;

void main$()$

$\{$

$\}$

char Arr$[100]=$ "cdaad";

f$1($Arr$,\text{'}$a$\text{'})$;

cout $$ Arr;

cdbba

cabbd

cdaad

cdabd