Don't forget ______the window before leaving the room.A．to have closedB．to closeC．having c

如果算符函数调用格式的表达式：x.operator-(operator++(y，0)中的“—”是作为成员函数重载的，“++”是作为友元函数重载的，那么该表达式还可以表示为()。

A．x-y++

B．x-(y)

C．(x++)-y

D．#NAME？

A．x-y++

B．x-(y)

C． (x++)-y

D．++x-y

A．x.operator++(0).operator*(y);

B．operator*(x.operator++(0),y);

C．y.operator*(operator++(x,0))

D．operator*(operator++(x,0),y)

A．x.operator++(0).operator*(y)

B．operator*(x.operator++(0), y)

C．y.operator*(operator++(x, 0))

D．operator*(operator++(x, 0), y)

A．x.operator++(0).operator*(y)；

B．operator*(x.operator++(0)，y)；

C．y.operator*(operator++(x,O))

D．operator*(operator++(x，0)，y)

A．x.operator++(0).operator*(y)

B．operator*(x.operator++(0)，y)

C．y.operator*(operator++(x,O))

D．operator*(operator++(x,O)，y)

A．operator++()

B．operator++(a)

C．operator++(a,1)

D．operator++(1,a)

A．x.operator++(0).operator *(y)；

B．operator * (x.operator++(0),y)；

C．y.operator * (operator++(x,0))

D．operator * (operator++(x,0),y)

A．operator /(x.operator- -(),y);

B．operator /(operator- -(x),y);

C．x.operator- -().Operator /(y);

D．y.operator /(operator- -(x));