C ++构造函数中前导下划线的含义是什么？ [英] What is the meaning of leading underscores in a C++ constructor?

问题描述

OK我不是一个非常有经验的C ++程序员，但我想知道下划线在下面的构造函数的参数中的意义是什么？

OK I am not a very experienced C++ programmer, but I was wondering what is the significance of the underscores in the arguments of the following constructor?

class floatCoords
 {
 public:
  floatCoords(float _x, float _y, float _width, float _height)
   : x(_x), y(_y), width(_width), height(_height)
  {

  }
  float x, y, width, height;
  ...

推荐答案

命名约定，它对语言没有意义。只需确保您不要使用大写字母：双下划线（__const）是什么意思在C？

It's just a convenient naming convention, it means nothing to the language. Just be sure you don't follow it with an upper-case letter: What does double underscore ( __const) mean in C?

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