“变量"的定义是什么? [英] What is the definition of a "variable"?

问题描述

标准指出

实体是值，对象，引用，函数，枚举数，类型， 类成员，模板，模板专业化，名称空间，参数 包装或这个.

An entity is a value, object, reference, function, enumerator, type, class member, template, template specialization, namespace, parameter pack, or this.

这意味着变量" 不是实体.

但在标准中进一步说:

每个表示实体的名称都由声明引入. 每个表示标签的名称都由goto引入 陈述(6.6.4)或标记陈述(6.1).

Every name that denotes an entity is introduced by a declaration. Every name that denotes a label is introduced either by a goto statement (6.6.4) or a labeled-statement (6.1).

和

通过引用以外的引用的声明来引入变量 非静态数据成员或对象.变量名称表示 引用或对象.

A variable is introduced by the declaration of a reference other than a non-static data member or of an object. The variable’s name denotes the reference or object.

我从这两个引号中假设变量是一个名称.

I'm assume from this two quotes that a variable is a name.

这是因为变量是由引用声明引入的，每个表示实体的名称都是由声明引入的. 但是变量的名称是什么意思?根据定义，变量也是一个名称.

It is because the variable is introduced by declaration of reference and every name that denotes entity introduced by a declaration. But what does a variable's name mean? A variable is also a name by definition.

推荐答案

我从这两个引号中假设变量是一个名称.

I'm assume from this two quotes that a variable is a name.

否，根据您提供的引号，变量是具有名称的对象或引用.

No, from the quotes you provided, a variable is an object or a reference which has a name.

这是因为变量是由引用声明引入的，每个表示实体的名称都是由声明引入的.

It is because the variable is introduced by declaration of reference and every name that denotes entity introduced by a declaration.

该声明同时引入了变量(对象或引用)及其名称.这并不意味着该变量就是名称，只是这两个变量都是由声明引入的.

The declaration introduces both the variable (the object or reference), and its name. This doesn't imply that that variable is the name, just that both are introduced by the declaration.

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