题目内容

已知类Sample中的一个成员函数说明如下： void Set(Sample &a); 其中，Sample &a的含义是 (58) 。

A. 指向类Sample的指针为a
B. 将a的地址值赋给变量Set
C. a是类Sample的对象引用，用来作函数Set( )的形参
D. 变量Sample与a按位相与作为函数Set( )的参数

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