C++ 删除fopen成功创建的文件时权限被拒绝

这是一个函数，它从用户处获取文件夹名称，创建一个文本文件，并在以后将其删除

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

输出： fopen 0的错误号[表示文件已成功创建。] 删除13的错误号[表示权限被拒绝]

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

如您所见，该文件夹尚未成功删除。

---

您可能需要设置文件夹的执行权限和写入权限。

您可能需要设置文件夹的执行权限和写入权限。

您需要先关闭文件：

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

void function(string LogFolder)
{
     // Acquire file handle
     FILE* fp = fopen((LogFolder+"/test.txt").c_str(),"w");

     if(fp == NULL) // check if file creation failed
     {
          cout<<"The errorno of fopen "<<errno<<endl;
          return;
     }

     // close opened file
     if(fclose(fp) != 0)
     {
         cout<<"The errorno of fclose "<<errno<<endl;
     }


     if(remove((LogFolder+"/test.txt").c_str()) != 0)
     {
          cout<<"The errorno of remove "<<errno<<endl;
     }
}

---

您需要先关闭该文件：

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

void function(string LogFolder)
{
     // Acquire file handle
     FILE* fp = fopen((LogFolder+"/test.txt").c_str(),"w");

     if(fp == NULL) // check if file creation failed
     {
          cout<<"The errorno of fopen "<<errno<<endl;
          return;
     }

     // close opened file
     if(fclose(fp) != 0)
     {
         cout<<"The errorno of fclose "<<errno<<endl;
     }


     if(remove((LogFolder+"/test.txt").c_str()) != 0)
     {
          cout<<"The errorno of remove "<<errno<<endl;
     }
}

---

这是因为文件仍处于打开状态。您应该在删除文件夹之前将其丢失。 差不多

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

void function(string LogFolder)
{
     FILE *fp = fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     fclose(fp);
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

---

这是因为文件仍处于打开状态。您应该在删除文件夹之前将其丢失。 差不多

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

void function(string LogFolder)
{
     FILE *fp = fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     fclose(fp);
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

---

首先，您不是在创建和删除文件夹，而是在文件夹中创建一个名为test.txt的文件

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

您的问题是，您需要先关闭该文件，然后才能允许删除它。试试下面的方法

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

void function(string LogFolder)
{
    FILE* myFile = fopen((LogFolder+"/test.txt").c_str(),"w");
    cout<<"The errorno of fopen "<<errno<<endl;
    fclose( myFile );
    cout<<"The errorno of fclose "<<errno<<endl;
    remove((LogFolder+"/test.txt").c_str());
    cout<<"The errorno of remove "<<errno<<endl;
}

---

首先，您不是在创建和删除文件夹，而是在文件夹中创建一个名为test.txt的文件

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

您的问题是，您需要先关闭该文件，然后才能允许删除它。试试下面的方法

void function(string LogFolder)
{
     fopen((LogFolder+"/test.txt").c_str(),"w");
     cout<<"The errorno of fopen "<<errno<<endl;
     remove((LogFolder+"/test.txt").c_str());
     cout<<"The errorno of remove "<<errno<<endl;
}

void function(string LogFolder)
{
    FILE* myFile = fopen((LogFolder+"/test.txt").c_str(),"w");
    cout<<"The errorno of fopen "<<errno<<endl;
    fclose( myFile );
    cout<<"The errorno of fclose "<<errno<<endl;
    remove((LogFolder+"/test.txt").c_str());
    cout<<"The errorno of remove "<<errno<<endl;
}

---

在尝试删除文件夹之前，您应该先关闭。除非您确实知道上一个函数失败，否则不要检查errno。如果函数没有失败，则errno的值未指定。请记住这一点。在尝试删除文件夹之前，您应该先关闭。除非您确实知道上一个函数失败，否则不要检查errno。如果函数没有失败，则errno的值未指定。请记住。工作正常。谢谢。工作正常。谢谢。