为什么它是不可能创造出在C ++中引用数组？ [英] Why it is impossible to create an array of references in c++?

问题描述

C ++标准8.3.2 / 4说：

  

有应没有引用
  引用，没有引用数组，
  没有指针引用。

但我不明白为什么这种限制将被添加到C ++。在我看来，code波纹管可以很容易地编译和工作？这是什么限制的真正原因是什么？

  INT A = 10，B = 20;
INT和C [] = {A，B};
 

解决方案

由于指数化到一个数组中的隐式转换为指针方面实际上定义，则指针运算。因此，为了支持这一点，你必须也支持指针引用，并定义意味着他们什么指针运算。

C++ Standard 8.3.2/4 says:

There shall be no references to references, no arrays of references, and no pointers to references.

But I can't understand why this restriction is added to c++. In my opinion the code bellow can easily be compiled and work? What is the real cause of this restriction?

int a = 10, b = 20;
int &c[] = {a, b};

解决方案

Because indexation into an array is actually defined in terms of an implicit conversion to a pointer, then pointer arithmetic. So to support this, you'd have to also support pointers to references, and define what pointer arithmetic means on them.

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