What is the output of the following code?

int i $=0$;

int x $=0$;

do $\{$

if $($i $\%5==0)\{$

cout $<<$ x;

x$++$;

$\}$

i$++$;

$\}$ while $($i $<10)$;

cout $<<$ x;

$0$

$01$

$012$

$011$