C / C++ / MFC

<br />
// get attributes<br />
DWORD dwAttributes = GetFileAttributes("C:\\asdf\\fdsa");<br />
<br />
// if value is -1, it does not exist<br />
if( dwAttributes != (DWORD)-1 ){<br />
<br />
  // make sure it is directory and NOT a file...<br />
  if( dwAttributes & FILE_ATTRIBUTE_DIRECTORY ){<br />
    // you are okay, it exists AND it is a directory<br />
  } else {<br />
    // could be a problem - a file 'C:\asdf\fdsa' is sitting there - NOT a folder<br />
  }<br />
<br />
} else {<br />
<br />
  // nothing is there go ahead and create your folder now...<br />
  // although the TRULY paranoid of you will verify that C:\asdf<br />
  // is TRULY a folder at this point...<br />
  dwAttributes = GetFileAttributes("C:\\asdf");<br />
<br />
  if( dwAttributes != (DWORD)-1 ){<br />
    // make sure it is directory and NOT a file...<br />
    if( dwAttributes & FILE_ATTRIBUTE_DIRECTORY ){<br />
      // you are okay, it exists AND it is a directory<br />
      // C:\asdf is an existing folder, so go ahead and create C:\asdf\fdsa<br />
    } else {<br />
      // could be a problem - a file 'C:\asdf' is sitting there - NOT a folder<br />
    }  <br />
  } else {<br />
    // C:\asdf missing too, so go ahead and create C:\asdf<br />
    // and then create C:\asdf\fdsa<br />
  }<br />
}<br />

//! Checks whether a directory exists.
//! @param  strDirectory  Directory
//! @return true if the directory exists, false otherwise.
bool dirExists
  (CString strDirectory)
{
  // Create full directory specification - return if unable
  TCHAR* fullPath = _tfullpath (NULL, strDirectory, 0);
  if (fullPath == NULL)
     return (false);
 
  // Check if directory exists by trying to make it the default directory
  TCHAR szCurrDir [_MAX_PATH];
  _tgetcwd (szCurrDir, _MAX_PATH - 1);
  long nStatus = _tchdir (fullPath);
  _tchdir (szCurrDir);
 
  // Return
  free (fullPath);    
  if (nStatus == 0)
     return (true);
  return (false);
}

struct _ptr
{
    double d; // value
    int n;    // original placement in array
} ptr[5] = {{-8, 0},{-9, 1},{5.6, 2},{3.4, 3},{0, 4}};
 
int Compare( const void *p1, const void *p2 )
{
    if (((_ptr *) p1)->d < ((_ptr *) p2)->d)
        return -1;
    else if (((_ptr *) p1)->d > ((_ptr *) p2)->d)
        return 1;
    else
        return 0;
}
 
void main( void )
{
    qsort(ptr, sizeof(ptr) / sizeof(ptr[0]), sizeof(ptr[0]), Compare);
    return;
}

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

void main( void )
{   
    cout << "Number   Index" << endl;
    cout << "------   -----" << endl;
 
    for (int x = 0; x < 5; x++)
        cout << "  " << ptr[x].d << "        " << ptr[x].n << endl;
     
    qsort(ptr, sizeof(ptr) / sizeof(ptr[0]), sizeof(ptr[0]), Compare);    
 
    cout << endl;
 
    for (x = 0; x < 5; x++)
        cout << "  " << ptr[x].d << "        " << ptr[x].n << endl;
}

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow