What is the output of the following code segment?

int $abc($int i$)$

$\{$

return $(i++)$;

$\}$

void main$()$

$\{$

int $i=abc(10)$;

cout $--$ i;

system$("$pause$")$;

$\}$

Select one:

$8$

$11$

$9$

$10$