C++中的引用变量是什么? [英] What is a reference variable in C++?

问题描述

C++ 中引用变量的简要定义是什么?

What would be a brief definition of a reference variable in C++?

推荐答案

reference 是一个实体，它是另一个对象的别名.

A reference is an entity that is an alias for another object.

引用 不是变量，因为变量仅通过对象的声明引入.object 是一个存储区域，在 C++ 中，引用不会(必然)占用任何存储空间.

A reference is not a variable as a variable is only introduced by the declaration of an object. An object is a region of storage and, in C++, references do not (necessarily) take up any storage.

由于 objects 和 references 在 C++ 中是不同的实体组，所以术语引用变量"没有意义.

As objects and references are distinct groups of entities in C++ so the term "reference variable" isn't meaningful.

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