c++ - 无法在 C++ 中打开头文件

Question

我有一个名为 simpio.h 的头文件，它与包含在其头文件中的文件位于同一文件夹中。但是，我不断收到错误“无法打开包含文件：'simpio.h'：没有这样的文件或目录。” 我正在使用 Visual C++ 2008 速成版。帮助将不胜感激。

谢谢

Answer 1

您需要使用双引号：

#include "simpio.h"

Answer 2

You have to know that you should use <> when you are trying to include a standard library header or when you want to include a file for which the path is contained in the Additional include directories option.

You have to use "" when you whant to include a file who doesn't satified the previous explanation, let's say that it is almost always file specific to your project.

Some example :

#include <iostream>           // library file
#include <boost/thread.hpp>   // there is "C:\SDKS\boost in my Additional include directories

#include "MyHeader.h"             // Local file, at the same place of my .vcproj
#include "Header/AnotherHeader.h" // Local file in a folder named "Header"

In your case, we can think that you are in the second case. You just have to do :

#include "simpio.h"

Or if your file is in another folder :

#include "SomeFolders/simpio.h"