未知类型名称“类" [英] unknown type name 'class'

问题描述

我正在为几个几何形状创建一个小型库.这样做，我将原型写到shapes.h文件中，并将方法写到shapes.cpp文件中. 这是标题:

I'm creating a small library for several geometric shapes. Doing so, I'm writing down prototypes into a shapes.h file and the methods into a shapes.cpp file. This is the header:

#ifndef __shapeslib
#define __shapeslib

class Shape{
protected:
  struct dimensions{
    double heigth;
    double width;
  };
  double radius;                        // for circle class to be inherited

public:
  Shape(double heigth, double width);   // Constructor
  Shape(const Shape & shape);           // copy constructor for class
  ~Shape();                             // Destructor

  virtual double area(double heigth, double width);
  virtual double perimeter(double heigth, double width);
  void height();
  void width();
  double rotate(double heigth, double width);
};

但是在Atom软件中保存文件时，出现class Shape{

But when saving the file in Atom software, I get these two errors for the line class Shape{

unknown type name 'class'

expected ';' after top level declarator

我在此处阅读，这可能是因为我使用C而不是C ++进行编译.我真的不知道如何避免这种情况(还是初学者).

I read here that could be because I'm compiling in C rather than C++. I sincerely have no idea about how to avoid this (still a beginner).

我还尝试将文件名从.h更改为.hpp，并且似乎可以正常工作.不幸的是，我必须有一个.h头文件.

I also tried to change the file name from .h to .hpp and seems working. Unfortunately, I must have a .h header file.

任何反馈都非常感谢. 谢谢大家.

Any feedback is really appreciated. Thanks everyone.

推荐答案

实际上，似乎Atom会自动将.h头文件检测为C语言文件. 此处介绍了解决此问题的几种方法.我尝试使用 ctrl + shift + L 从C到C ++进行手动切换，但是现在没有任何错误了.我可能在单词class旁边仍然有一个红点，并且显示了这样的错误:

Actually, seems that Atom detects a .h header file as a C-language file automatically. Several ways to resolve this are explained here. I tried with a manual switch from C to C++ using ctrl+shift+L and now I don't have any error left. I may still have a red point next to the word class and such an error is showed:

expected ';' after top level declarator

但是代码可以正常运行.

but the code runs normally though.

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