enum EGrade{ ESTAR5, ESTAR4, ESTAR3, ESTAR2, ESTAR1, ENONESTAR};enum EItem{ EA_Item, EB_Item, EC_Item, ED_Item, EE_Item, EF_Item, EG_Item, EH_Item, EI_Item, EJ_Item, EK_Item, ENONEITEM};int arr[11];void GradeSelection(vector& percent, EGrade& grade, int n);void InitialPercentArr(vector& percent);int main(){ vector percent(100); EGrade grade = EGrade::ENONESTAR; EItem Item = EItem::ENONEITEM; in..