我的编码收到C4430和C2144错误. [英] I am receiving C4430 and C2144 errors for my codings.

问题描述

我是Visual C ++的新手.我正在尝试为我的练习制作一个简单的DLL.我的编码如下:
CB.CPP

I am new to Visual C++. I am trying to make a simple DLL for my practice. My coding is as follows:
CB.CPP

#include "stdafx.h"
#include "CB.h"



extern "C" EXPORT int WINAPI sum (int x, int y)//C2144 and C4430

{
    return x+y;
}

和CB.H

and CB.H

#define CBExport __declspec(dllexport)

#ifdef __cplusplus
extern "C"
{
#endif

extern "C" EXPORT int WINAPI sum (int x, int y);//C2144 and C4430

#ifdef __cplusplus
}
#endif

尝试构建此编时，我收到错误C4430和C2144. C2144错误如下:
1> d:\ context broker \ cb \ cb \ cb \ cb.h(14):错误C2144:语法错误:"int"之前应加上;" 和C4330错误如下:
1> d:\ context broker \ cb \ cb \ cb \ cb.h(14):错误C4430:缺少类型说明符-假定为int.注意:C ++不支持default-int

I am receiving the errors C4430 and C2144 while trying to build this prog. The C2144 error is as follows:
1>d:\context broker\cb\cb\cb\cb.h(14) : error C2144: syntax error : ''int'' should be preceded by '';''
and C4330 error is follows:
1>d:\context broker\cb\cb\cb\cb.h(14) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

推荐答案

从
更改

JanuSatish写道:

JanuSatish wrote:

#define CBExport __declspec(dllexport)

#define CBExport __declspec(dllexport)

到

to

#define EXPORT __declspec(dllexport)

顺便说一句，您不应该复制"extern"子句.

BTW you shouldn''t duplicate the ''extern'' clause.

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