Transform a string to year, month and day
[C++]
int XlStringToDate(
   const char* str,
   int* yy,
   int* mm,
   int* dd
);
A string containing a date. Excel will use the date formatting rules currently in force to read the string.
Pointer to variable which will contain year (eg 1996).
Pointer to variable which will contain month (1-12).
Pointer to variable which will contain day of month (1-31).
1 if the function succeeds; 0 if it fails
This function calls Excel's DATEVALUE(), YEAR(), MONTH() and DAY() functions
			to transform a string date into its components. Because it uses Excel for the transformation, it handles variations in 
			the Excel base date transparently.
Header: xlldate.h