Parsing a string

[goldwing]

First of all I am less informed than a "beginner". I have a program that was written for me several years ago and I no longer have acces to the programmer. There is on small portion that does not work correctly and I would like to try to change it myself. I can compile it using Visual Studio 2008.
Here is the code. This is not the complete program, only the part that isn't working:

double fInches;

	// Grab the input string into something useful
	CString strTemp(szIiSs);
	strTemp.Trim();

	// Now the math -- convert the string to fractional inches
	// Grab the portion before the decimal
	int iStart = 0;
	CString strToken = strTemp.Tokenize(_T("."), iStart);
	fInches = fabs(_tcstod(strToken, NULL));

	// And after
	if (iStart > -1)
	{
		strToken = strTemp.Tokenize(_T("."), iStart);

		// More addition
		fInches += _tcstod(strToken, NULL) / 16.0;
	}

The problem is if I use the string ".12" it returns 12 instead of 0.75, (12/16).
If I use the string "0.12" it works correctly and returns 0.75.


Again, I do not know how to program so what I need is actual code that fixes the problem. An explanation would fall on ignorant eyes here but might help someone else.
Thanks