bool operator = (Query q){ intQnum = q.Qnum(); intPeriod = q.Period(); intTimeOfReturn = q.TimeOfReturn(); }
friend bool operator< (Query q1, Query q2){ return (q2.TimeOfReturn() < q1.TimeOfReturn()) || ((q2.TimeOfReturn() == q1.TimeOfReturn())&&(q2.Qnum() < q1.Qnum())); }