C++ 错误 C2011: '': 'class' 类型重新定义
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error C2011: '' : 'class' type redefinition
提问by user3164272
One of the header files is as follows -
其中一个头文件如下——
#include "stdafx.h"
class AAA
{
public:
std::string strX;
std::string strY;
};
When I try to compile the project, I get the error
当我尝试编译项目时，出现错误
error C2011: 'AAA' : 'class' type redefinition
Nowhere else in my program have I redefined the class AAA. How do I fix this?
在我的程序中没有其他地方我重新定义了 class AAA。我该如何解决？
回答by Ashot
Change to code to something like this:
将代码更改为如下所示：
#ifndef AAA_HEADER
#define AAA_HEADER
#include "stdafx.h"
class AAA
{
public:
std::string strX;
std::string strY;
};
#endif
If you include this header file more than once in some source file, include guards will force compiler to generate class only once so it will not give class redefinitionerror.
如果在某个源文件中多次包含此头文件，包含保护将强制编译器仅生成一次类，因此不会class redefinition出错。
回答by Kevin Johnsrude
Adding
添加
#pragma once
to the top of your AAA.h file should take care of the problem.
到 AAA.h 文件的顶部应该可以解决这个问题。
like this
像这样
#include "stdafx.h"
#pragma once
class AAA
{
public:
std::string strX;
std::string strY;
};
回答by ScottMcP-MVP
In addition to the suggested include guards you need to move #include "stdafx.h" out of the header. Put it at the top of the cpp file.
除了建议的包含保护之外，您还需要将 #include "stdafx.h" 移出标题。把它放在cpp文件的顶部。
