main.cpp: In function $$int main$()$:

main.cpp:$17$:$14$: error: request for member $$push$\_$back$$ in $$idList$,$ which is of non$-$class type $$int$$

$17|$ idList.push$\_$back$($i$)$;

$|^$~~~~~~~~

main.cpp:$19$:$20$: error: request for member $$push$\_$back$$ in $$employeeList$,$ which is of non$-$class type $$int$$

$19|$ employeeList.push$\_$back$($i$)$;

$|^$~~~~~~~~