使用 C 和 C++ 代码在 C++ 项目中编译错误
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时间：2020-08-27 12:54:53 来源:igfitidea点击:
Compiling error in C++ project with C and C++ codes
提问by OpenMinded
I've created a C++ project where I use C and C++ codes and have some problems with headers... OK, I have 3 codes:
我创建了一个 C++ 项目，在其中使用 C 和 C++ 代码，并且在标题方面存在一些问题......好吧，我有 3 个代码：
basicOCR.cpp
基本OCR文件
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "preprocessing.h"
#include "basicOCR.h"
preprocessing.c
预处理.c
#include <stdio.h>
#include <ctype.h>
#include <math.h>
#include "preprocessing.h"
main.c
主文件
#include <stdio.h>
#include <ctype.h>
#include "basicOCR.h"
and my 2 own header files:
和我自己的 2 个头文件：
basicOCR.h
基本OCR文件
#include <stdio.h>
#include <ctype.h>
preprocessing.h
预处理.h
#include <stdio.h>
#include <ctype.h>
Whenever I try to compile a project, it compiles basicOCR.cppwithout any problems but preprocessing.cand main.cgive me syntax errors in cstdliband xstddef. I know that they are C++ libraries. I read this How to mix C and C++
每当我尝试编译一个项目时，它都会编译basicOCR.cpp没有任何问题，但preprocessing.c和main.c在cstdlib和xstddef 中给我语法错误。我知道它们是 C++ 库。我读了这个如何混合 C 和 C++
and tried almost everything but it didn't work.
并尝试了几乎所有方法，但没有奏效。
1> preprocessing.c
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(19): error C2054: expected '(' to follow 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(19): error C2061: syntax error : identifier 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(19): error C2054: expected '(' to follow 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2061: syntax error : identifier 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2061: syntax error : identifier 'abs'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2061: syntax error : identifier 'atexit'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2061: syntax error : identifier 'atof'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2061: syntax error : identifier 'atoi'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2061: syntax error : identifier 'atol'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2061: syntax error : identifier 'bsearch'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2061: syntax error : identifier 'calloc'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2061: syntax error : identifier 'div'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2061: syntax error : identifier 'exit'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2061: syntax error : identifier 'free'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2061: syntax error : identifier 'getenv'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2061: syntax error : identifier 'labs'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2061: syntax error : identifier 'ldiv'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2061: syntax error : identifier 'malloc'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2061: syntax error : identifier 'mblen'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2061: syntax error : identifier 'mbstowcs'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2061: syntax error : identifier 'mbtowc'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2061: syntax error : identifier 'qsort'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2061: syntax error : identifier 'rand'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2061: syntax error : identifier 'realloc'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2061: syntax error : identifier 'srand'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2061: syntax error : identifier 'strtod'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2061: syntax error : identifier 'strtol'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(29): error C2061: syntax error : identifier 'strtoul'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(29): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(29): error C2061: syntax error : identifier 'system'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(29): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(30): error C2061: syntax error : identifier 'wcstombs'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(30): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(30): error C2061: syntax error : identifier 'wctomb'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(30): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(32): error C2054: expected '(' to follow 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(34): error C2061: syntax error : identifier 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(34): error C2061: syntax error : identifier 'lldiv'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(34): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstddef(18): error C2054: expected '(' to follow 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstddef(18): error C2061: syntax error : identifier 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(78): error C2143: syntax error : missing '{' before '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(78): error C2059: syntax error : '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(87): error C2143: syntax error : missing '{' before '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(87): error C2059: syntax error : '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(98): error C2061: syntax error : identifier 'tr1'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(98): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(98): error C2449: found '{' at file scope (missing function header?)
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(101): error C2059: syntax error : '}'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(125): error C2143: syntax error : missing '{' before ':'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(125): error C2059: syntax error : ':'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(132): error C2143: syntax error : missing '{' before '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(132): error C2059: syntax error : '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(141): error C2143: syntax error : missing '{' before '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(141): error C2059: syntax error : '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\eh.h(27): fatal error C1189: #error : "eh.h is only for C++!"
1> main.c
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(19): error C2054: expected '(' to follow 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(19): error C2061: syntax error : identifier 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(19): error C2054: expected '(' to follow 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2061: syntax error : identifier 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2061: syntax error : identifier 'abs'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2061: syntax error : identifier 'atexit'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(21): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2061: syntax error : identifier 'atof'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2061: syntax error : identifier 'atoi'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2061: syntax error : identifier 'atol'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(22): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2061: syntax error : identifier 'bsearch'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2061: syntax error : identifier 'calloc'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2061: syntax error : identifier 'div'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(23): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2061: syntax error : identifier 'exit'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2061: syntax error : identifier 'free'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2061: syntax error : identifier 'getenv'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(24): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2061: syntax error : identifier 'labs'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2061: syntax error : identifier 'ldiv'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2061: syntax error : identifier 'malloc'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(25): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2061: syntax error : identifier 'mblen'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2061: syntax error : identifier 'mbstowcs'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2061: syntax error : identifier 'mbtowc'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(26): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2061: syntax error : identifier 'qsort'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2061: syntax error : identifier 'rand'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2061: syntax error : identifier 'realloc'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(27): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2061: syntax error : identifier 'srand'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2061: syntax error : identifier 'strtod'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2061: syntax error : identifier 'strtol'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(28): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(29): error C2061: syntax error : identifier 'strtoul'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(29): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(29): error C2061: syntax error : identifier 'system'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(29): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(30): error C2061: syntax error : identifier 'wcstombs'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(30): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(30): error C2061: syntax error : identifier 'wctomb'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(30): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(32): error C2054: expected '(' to follow 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(34): error C2061: syntax error : identifier 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(34): error C2061: syntax error : identifier 'lldiv'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstdlib(34): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstddef(18): error C2054: expected '(' to follow 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\cstddef(18): error C2061: syntax error : identifier 'using'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(78): error C2143: syntax error : missing '{' before '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(78): error C2059: syntax error : '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(87): error C2143: syntax error : missing '{' before '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(87): error C2059: syntax error : '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(98): error C2061: syntax error : identifier 'tr1'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(98): error C2059: syntax error : ';'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(98): error C2449: found '{' at file scope (missing function header?)
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(101): error C2059: syntax error : '}'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(125): error C2143: syntax error : missing '{' before ':'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(125): error C2059: syntax error : ':'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(132): error C2143: syntax error : missing '{' before '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(132): error C2059: syntax error : '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(141): error C2143: syntax error : missing '{' before '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xstddef(141): error C2059: syntax error : '<'
1>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\eh.h(27): fatal error C1189: #error : "eh.h is only for C++!"
回答by OpenMinded
I got that. The solution to this was to make a right click on each C code and Properties>C/C++>Advanced>Compile As and check Compile as C++ Code(/TP)
我明白了。解决这个问题的方法是右键单击每个 C 代码和 Properties>C/C++>Advanced>Compile As 并检查 Compile as C++ Code(/TP)
回答by user877329
It looks like vc use c++ headers for c code.
看起来 vc 对 c 代码使用 c++ 头文件。
This does not answer the question, but why not just use C++? The only time you need C is when you want to be compatible with different versions of different compilers, which happens when you build a plug-in architecture. In this case you declare plug-in prototypes in a "SDK" header like this:
这不能回答问题，但为什么不直接使用 C++？唯一需要 C 的时候是当你想兼容不同版本的不同编译器时，这发生在你构建插件架构时。在这种情况下，您在“SDK”标头中声明插件原型，如下所示：
#ifndef __SDK_H
#define __SDK_H
#ifdef __cplusplus
extern "C"
{
#endif
__declspec(dllexport) return_type calling_convention function_name(parameters);
#ifdef __cplusplus
}
#endif
#endif
Then you can compile your plugin.c which should contain the following:
然后你可以编译你的 plugin.c ，它应该包含以下内容：
#include "sdk.h"
return_type function_name(parameters)
{
/*Do stuff here*/
}
