无法理解错误消息:“非静态成员引用必须相对于特定对象"

问题描述

我不断收到非静态成员引用必须相对于特定对象"错误而且我实际上不明白我的代码仅包含2个类:1-信息2名员工

I Keep getting the 'nonstatic member reference must be relative to specific object' errorand i don't actually get it my code is simply Consists of 2 classes :1-Info2-Employee

和Employee类从Info继承

and Employee class inherit from Info

INFO类具有2个变量:ID-名称.并且我正在尝试像这样访问ID变量

the INFO class has 2 variable : ID - Name.and I'm trying to access the ID variable like this

cin >> Employee.Info.ID

有什么帮助吗?

推荐答案

错误消息明确指出，您正在尝试访问不带对象的对象成员:您需要区分类和对象. class 定义该特定 class 的对象的外观，即对象支持哪些数据成员和函数成员.您可能想按照以下方式做一些事情

The error message clearly states that you are trying to access an object's member without an object: You need to distinguish classes and objects. A class defines how objects of that particular class look like, i.e., what data members and function members the objects support. You probably want to do something along the lines of

Employee worker;
worker.Info.ID = "ID";
std::cout << worker.Info.ID << '\n';

(假设 Info 恰好是 Employee 的数据成员，而其类型又具有 ID 数据成员.

(assuming Info happens to be a data member of Employee whose type in turn has an ID data member.

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