fopen，_wfopen .error C4996。代码取自MSDN但无法正常工作。 [英] fopen, _wfopen .error C4996. code taken from MSDN but not working.

问题描述

i从MSDN获取以下代码并粘贴到我的项目中，但它给了我一个错误，上面写着：



错误C4996：'_ wfopen'：此函数或变量可能不安全。请考虑使用_wfopen_s。要禁用弃用，请使用_CRT_SECURE_NO_WARNINGS。



以下是代码：

Hi,

i took the code below from MSDN and pasted in my project, But it gives me an error which says:

error C4996: '_wfopen': This function or variable may be unsafe. Consider using _wfopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS.

Here is the code:

#include "stdafx.h"//The only line I've added.
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <wchar.h>

#define BUFFER_SIZE 50

int main(int argc, char** argv)
{
wchar_t str[BUFFER_SIZE];
size_t  strSize;
FILE*   fileHandle;

    // Create an the xml file in text and Unicode encoding mode.
    if ((fileHandle = _wfopen( L"_wfopen_test.xml",L"wt+,ccs=UNICODE")) == NULL) // C4996
    // Note: _wfopen is deprecated; consider using _wfopen_s instead
    {
        wprintf(L"_wfopen failed!\n");
        return(0);
    }

    // Write a string into the file.
    wcscpy_s(str, sizeof(str)/sizeof(wchar_t), L"<xmlTag>\n");
    strSize = wcslen(str);
    if (fwrite(str, sizeof(wchar_t), strSize, fileHandle) != strSize)
    {
        wprintf(L"fwrite failed!\n");
    }

    // Write a string into the file.
    wcscpy_s(str, sizeof(str)/sizeof(wchar_t), L"</xmlTag>");
    strSize = wcslen(str);
    if (fwrite(str, sizeof(wchar_t), strSize, fileHandle) != strSize)
    {
        wprintf(L"fwrite failed!\n");
    }

    // Close the file.
    if (fclose(fileHandle))
    {
        wprintf(L"fclose failed!\n");
    }
    return 0;
}

这是MSDN上的链接：





http://msdn.microsoft.com/en-us/library /yeby3zcb.aspx [ ^ ]



为什么会出现这个错误？

我该如何解决？

Here is the link on MSDN:


http://msdn.microsoft.com/en-us/library/yeby3zcb.aspx[^]

Why does this error come up?
How should i fix it?

推荐答案

这是微软的事情，它们可能不安全：你的用法看起来很好。

您可以（按照建议）禁用编译器弃用或使用 _wfopen_s 。

It's a Microsoft thing, they are potentially unsafe: your usage looks perfectly fine.
You may either (as suggested) disable the compiler deprecation or use _wfopen_s.

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