使用C和C++代码编译C++项目中的错误

Ope*_*ded 8 c c++ visual-studio-2010

我已经创建了一个C++项目,我使用C和C++代码并且标题有一些问题......好吧,我有3个代码:

basicOCR.cpp

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>

#include "preprocessing.h"
#include "basicOCR.h"
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preprocessing.c

#include <stdio.h>
#include <ctype.h>
#include <math.h>

#include "preprocessing.h"
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main.c中

#include <stdio.h>
#include <ctype.h>

#include "basicOCR.h"
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和我自己的头文件:

basicOCR.h

#include <stdio.h>
#include <ctype.h>
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preprocessing.h

#include <stdio.h>
#include <ctype.h>
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每当我尝试编译项目时,它编译basicOCR.cpp没有任何问题,但preprocessing.cmain.ccstdlibxstddef中给出了语法错误.我知道它们是C++库.我读了这篇如何混合C和C++

并尝试了几乎所有的东西,但它没有奏效.

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++!"
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Ope*_*ded 20

我明白了.解决方案是右键单击每个C代码并选择属性> C/C++>高级>编译为并检查编译为C++代码(/ TP)

  • 更好的解决方案是使用 .cpp 文件扩展名 - 然后 Visual Studio 将使用 C++ 编译器自动编译它。通过使用 .c 文件扩展名,您暗示您需要 C 编译器,这就是您必须显式覆盖它的原因。 (2认同)