c++ - 类内定义的名字是否可以以下划线开头？

Question

《C++ Primer》第五版，中文版。42 页。
我记得有定义成员有下划线加名字的方式，为的是与构造函数的参数区分开，但是书上说函数之外不能以下划线开头。

Answer 1

Because it is in a class, it can start with an underscore followed by a lowercase letter, but it cannot start with a double underscore or an underscore followed by an uppercase letter. Please refer to here: http://stackoverflow.com/questions/228783/what-are- the-rules-about-using-an-underscore-in-a-c-identifier

Answer 2

As long as the defined member name complies with C++ specifications, it is OK.

The C++ standard has never stipulated that members outside functions cannot start with an underscore.

This may be useful to you https://www.zhihu.com/question/22419899

Answer 3

There is a way to write private attributes starting with an underscore.
Whether it can be written like this depends on the team's coding standards.