Problem when Converting from CString to int

I am new on Using with dotnet platform. Previously I have Experience on working with VC++ 6.0.
On this exp, I hav choose VC++.Net for my current Project... By understanding the UNICODE fromats, I was going on right way(Extremely with the helps of CodeGuru team)

Here I am receiving some Datas from an Extenal PC Board via Serial Port.
The Data Receiving as ASCII format and I have stored it on a CString FirstData.
The following codes explains it.

Code:

---

CString FirstData;// already declared and here reads Data from Serial Port
for(int i=0;i<FirstData.GetLength();i++)
{
  int ibyte;
  CString ll;
  ll=FirstData.GetAt(i);
  sscanf(ll,"&#37;x",&ibyte)
}

---

Here I wanna convert this CString value ll to an int Hex Format and print it on a file....
But it is not working here.error Message came as "Cannot convert parameter 1 from CString to const char*.

Next I have changed sscanf as

Code:

---


_stscanf(ll,_T("%x),&ibyte);

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It has worked...But when I read the data ibyte..it is wrong(some error datas are printed)
Again I used atoi function--still error values came.
How do I convert the exact data to an int Format.plz help...

Sure, "char cannot be convert to a char* (as well as any other object cannot be converted to its pointer!)
You must understand:
1. CString::GetAt() returns NOT a string but a single character (char)
2. Use sscanf in MFC - is nonsense! There are more simple and appropriate functions, such as _ttoi, _tcstoul, _tcstol
3. All these convertion functions require a pointer to the buffer containing text to convert, so if you need/want to convert only one character you can use CString::Mid to extract a substring with only this one character:

Code:

---

CString FirstData;// already declared and here reads Data from Serial Port
for(int i=0;i<FirstData.GetLength();i++)
{
  int ibyte = _ttoi( FirstData.Mid(i, 1));
}

---

thank u VictorN,

further, if I want to write this ibyte on a file...
Can I use fprintf function????

Well, if you want to ignore MFC advantages (CFile, CStdioFile classes) then yes, of course you can use fprintf function.

Thank u...

The error solved bt on printing in file, I've coded as

Code:

---

_ftprintf(file1,_T("%.2X"),ibyte);

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each data printed as 0 only.. not the exact converted forms of getting values in CString.

So I've confirmed the ibyte value by formatted on CString.Since all the values are 0 only..
wy so?? I'm confused!!!!!

Perhaps, you are printing the only 2 high bytes os ibyte?

Well, the main question is: what are you trying to do and why do do it so complicated?

Code:

---

CString FirstData;// already declared and here reads Data from Serial Port
for(int i=0;i<FirstData.GetLength();i++)
{
  _ftprintf(file1,_T("%.2X"), FirstData[i]);
}

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