How to convert from ofstream to CFile

[chobey]

Hi all,
I'm a newbie in C++ and I have a problem converting this ofstream codes to CFile..
Anyone can help me?

void CCTImageDoc::WriteToFile(double* arr, int Cnt, char *fName)
{
ofstream fout(fName);
for (int i=0; i<Cnt; i++)
{
fout<<arr[i]<<endl;
}
fout<<flush;
fout.close();
}

[Philip Nicoletti]

Assuming that you want text output, the simplest way would
be to use CStdioFile.

In the loop, create a CString variable, use the CString::Format
to convert the double to a CString, and then use CStdioFile::WriteString.

Note: above is not type save like ostream operator <<

[chobey]

in the loop?
what about the things outside the loop?

can you write the program, please?

[cilu]

Take a look in MSDN. You'll find examples there. CFile also has Flush() and Close(). But Close() does flushing, you don't have to call it explicitly.

[chobey]

void CCTImageDoc::WriteToFile(float *arr, int Cnt, char *fName)
{
CFile fout(fName);
fout.Write(arr,Cnt);
}

I write it that way, but it doesn't work..
what should I do?
I really need the answer quick..

[cilu]

Of course it doesn't work. That's now how you write an array of floats. You have to do it like this:

void CCTImageDoc::WriteToFile(float *arr, int Cnt, char *fName)
{
   CFile fout(fName);
   for(int i = 0; i < Cnt; ++i)
   {
      fout.Write((void*)&arr[i], sizeof(float));
   }
   fout.Close(); // not actually necessary, the destructor calls it
}