牛黄解毒丸

在某类的公共部分有声明string operator++()；和string operator++(int)；则说明

A．string operator++()；是前置自增运算符声明

B．string operator++()；是后置自增运算符声明

C．string operator++(int)； 是前置自增运算符声明

D．两条语句无区别

A、foo operator++ (int);

B、foo operator++ (int dummy);

C、foo operator++ (foo &, int);

D、foo &operator++ (foo &);

E、foo &operator++ ();

F、foo &operator++ (double);

A．operator++()

B．operator++(a)

C．operator++(a,1)

D．operator++(1,a)

若为Fraction类重载前增1运算符++，应在类体中将其声明为()。

A) Fraction& operator++();

B) Fraction& operator++(int);

C) friend Fraction& operator++();

D) friend Fraction& operator++(int);

A．(operator＋＋(x) ) .operator/(y)

B．(operator＋＋(0) ) .operator/(y)

C．operator/((operator＋＋(x,0) ) ,y)

D．operator/((operator＋＋(0) ) ,y)

A．(operator++(x)).operator/(y)

B．(operator++(0)).operator/(y)

C．operator/((operator++(x,0)),y)

D．operator/((operator++(0)),y)

A．String[] a

B． String a[]

C． char a[][]

D． String a[10]

A．String [] a

B． String a[]

C． char a[][]

D． String a[]

A．前置- -和[ ]

B．=和[ ]

C．[ ]和后置- -

D．+和=