C ++文件，包括C头文件 [英] C++ file including C header file

问题描述

我需要包括C头文件在我的C ++项目，但G ++抛出错误不在此范围内声明。
我读，我需要使用externC的关键字来修复它，但它似乎并没有为我工作。

I need to include a C header file in my C++ project but g++ throws "not declared in this scope" errors. I read that i need to use extern "C" keyword to fix it but it didn't seem to work for me.

下面是一个虚拟的例子触发此错误。

Here is a dummy example triggering this error.

main.cpp中：

main.cpp:

#include <iostream>
extern "C"
{
#include "includedFile.h"
}
int main()
{
    int a = 2;
    int b = 1212;
    std::cout<< "Hello World!\n";

    return 0;
}

includedFile.h

includedFile.h

#include <stdint.h>
enum TypeOfEnum {
    ONE,
    TWO,
    THREE,
    FOUR = INT32_MAX,
};

抛出的错误是：

$> g++ main.cpp 
In file included from main.cpp:4:0:
includedFile.h:7:9: error: ‘INT32_MAX’ was not declared in this scope
FOUR = INT32_MAX,

我看到<一个href=\"http://stackoverflow.com/questions/3233054/error-int32-max-was-not-declared-in-this-scope\">this帖子，我可能需要的#define __STDC_LIMIT_MACROS 没有任何成功。

I saw on this post that I may need #define __STDC_LIMIT_MACROS without any success.

欢迎任何帮助！

推荐答案

＆LT; cstdint＆GT; 是一个C ++ 11功能。通 -std = C ++ 11 到你的编译器。

<cstdint> is a C++11 feature. Pass -std=c++11 to your compiler.

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