please explain std::vector::const$\_$iterator Receptionist::findPatient$($const std::vector& patients, int id$)\{//$Mouayad Darwish, Yessenia Castro

for $($auto it $=$ patients.begin$()$; it $!=$ patients.end$()$; $++$it$)\{$

if $((*$it$)->$getId$()==$ id$)\{$

return it;$\}$

$\}$

return patients.end$()$;

$\}$